lost
lost — adjective
1. Unable to tell your present location or find the right route to the place you wa
Unable to tell your present location or find the right route to the place you want to reach.
Takeshi realized he was lost when the forest trail split into three paths.
be/get lost — physical disorientation
The lost child sat quietly at the mall information desk while the staff called her parents.
lost + noun (attributive)
Nia asked a stranger for directions after her phone died and she felt completely lost.
Walking without a map in the old town, Christopher became lost among the narrow winding streets.
become lost + among/in (location)
The group checked their compass before sunset to avoid getting lost on the mountain trail.
- get lost
- feel lost
- become lost
- lost child
- lost hiker
- lost + in
- disoriented
more formal, suggests confusion about direction or time
- off course
usually about vehicles or journeys, not people
- astray
literary or formal; often used with 'go astray'
- found
the direct opposite when physically located
Grammar Patterns
be/get lost
lost + noun
Usage Note
Commonly used with the verbs 'get', 'become', or 'feel'. When used attributively before a noun (e.g. 'lost child'), it describes someone whose location is unknown.
Common Mistakes
2. No longer where it belongs or where you expect it to be, even after you search f
No longer where it belongs or where you expect it to be, even after you search for it.
Adina searched everywhere for her lost keys but finally found them under the sofa.
lost + noun — describing object that cannot be found
The museum put up a notice about a lost painting worth over two million dollars.
A lost wallet was handed in to the front desk with all the cash still inside.
Salma felt a wave of panic when she spotted the lost luggage tag at the airport.
lost luggage / lost property — common collocations
The library charges a replacement fee for lost books that are not returned.
- lost property
- lost luggage
- lost keys
- lost wallet
- lost + noun (object)
Grammar Patterns
lost + noun
be lost
go missing (common idiomatic phrase)
Usage Note
Use 'go missing' (chiefly British) or 'turn up missing' (American) when describing the moment something is noticed as lost. For people who cannot be found, 'missing' is more common than 'lost' (except for children).
Common Mistakes
3. Feeling unsure about what to do or how to behave because the situation is unfami
Feeling unsure about what to do or how to behave because the situation is unfamiliar or difficult.
After the company closed, Tomás felt lost and did not know where to find work.
feel lost — emotional/mental state
The new student looked lost on her first day, unable to find any of her classrooms.
When the manager changed all the rules overnight, the whole team felt lost and confused.
Bao stood in the middle of the busy station, feeling lost without his travel companion.
feeling lost + without (specifying what is missing)
Elderly people sometimes feel lost when technology changes faster than they can learn it.
- feel lost
- look lost
- lost + about
- lost + without
- confused
overlaps but 'confused' is more about not understanding ideas; 'lost' is more about not knowing what to do
- bewildered
stronger and more formal; suggests complete confusion
- helpless
focuses on inability to act without help
Grammar Patterns
feel lost
be lost + about/in
Usage Note
This sense overlaps with 'confused' but is broader: 'lost' suggests not knowing what step to take next, while 'confused' focuses on not understanding ideas or facts. Commonly followed by 'about' or 'without'.
Common Mistakes
4. So deeply focused on one activity, thought, or experience that the world around
So deeply focused on one activity, thought, or experience that the world around you fades from your awareness.
Élise was so lost in her novel that she did not hear the dinner bell ring.
be lost in + (book/music/thought)
The painter sat lost in thought, staring at the blank canvas for almost an hour.
Ramón became lost in the music, tapping his foot without noticing the crowded room.
become lost in — gradual absorption
Little Pedro was lost in a world of dinosaurs, completely ignoring his lunch on the table.
Ritu was so lost in her phone that she walked right past her bus stop.
- lost in thought
- lost in a book
- lost in music
- lost in conversation
- lost in memories
- distracted
opposite — attention split across multiple things
- alert
opposite — fully aware of surroundings
Grammar Patterns
be lost in + noun
get lost in + noun
Usage Note
Almost always used in the pattern 'lost in + noun' — the noun is the thing absorbing attention (a book, thought, memory, music, conversation). This sense is never used attributively (not 'a lost reader').
Common Mistakes
5. In a situation that cannot succeed or be saved; certain to end in failure or des
In a situation that cannot succeed or be saved; certain to end in failure or destruction.
Without food or clean water, the sailors on the small boat were lost at sea.
be lost — beyond rescue
The lawyer told her client that the lawsuit was a lost cause from the very beginning.
lost cause — common fixed expression
After the fire destroyed all their equipment, the family business was lost beyond recovery.
The rescue team refused to give up on the trapped miners whom others had called lost.
Historians consider the ancient manuscript a lost treasure that may never be found again.
lost treasure — attributive use for unrecoverable things
- lost cause
- lost soul
- lost at sea
- lost generation
- lost treasure
- doomed
stronger sense of fate; more dramatic
- hopeless
more common, less formal
- irrecoverable
very formal, used mainly in writing
- safe
opposite in terms of being beyond danger
- salvageable
opposite — capable of being saved
Grammar Patterns
be lost
lost + noun (doomed entity)
Usage Note
Frequently found in the fixed phrase 'a lost cause' (a plan or effort that cannot succeed). Also common in contexts of death or destruction — 'lost at sea', 'lost to the world'. Used attributively ('lost soul', 'lost generation') for people or groups beyond hope.
Common Mistakes
6. Not used in a good or effective way; no longer available to be taken advantage o
Not used in a good or effective way; no longer available to be taken advantage of or gained.
Takeshi regretted the lost opportunity to study abroad when he was younger.
lost opportunity — common collocation
The three-hour meeting was lost time for everyone who had urgent work to finish.
After the power cut, the chef mourned the lost ingredients that had spoiled in the fridge.
Adina tried to make up for lost time by practising the violin for four hours every day.
make up for lost time — fixed phrase
A minute spent waiting in line feels like a lost minute that could be used better.
- lost time
- lost opportunity
- lost chance
- lost income
- lost revenue
Grammar Patterns
lost + noun (opportunity/time)
make up for lost time
Usage Note
Commonly modifies nouns like 'time', 'opportunity', 'chance', 'income', 'revenue'. The fixed phrase 'make up for lost time' means to do something more intensely after a period of not doing it. Distinguish from sense 5 (DOOMED): here the focus is on missed potential, not on destruction or hopelessness.
Common Mistakes
get lost!
idiomA rude and informal way to tell someone to go away because they are annoying you.
When the salesman kept following her down the street, Nia turned around and said, 'Get lost!'
The kids told the bully to get lost when he tried to take their football.
be lost for words
idiomTo be so surprised, shocked, or emotional that you cannot think of anything to say.
When Takeshi opened the gift and saw the watch his father had owned, he was lost for words.
The judge was lost for words when the defendant suddenly confessed to a crime nobody knew about.
be lost on someone
idiomIf something such as a joke, remark, or explanation is lost on someone, they do not understand or appreciate it.
The humour of the situation was lost on Christopher, who was too tired to find anything funny.
Her advice about saving money was lost on the teenagers, who spent everything they earned.
Used to say that two people dislike each other and make no effort to hide it.
There was no love lost between the two chefs, who had been competitors for over a decade.
No love is lost between the neighbours; they have been arguing about the fence for years.
all is not lost
idiomUsed to say that there is still a chance to succeed or make a bad situation better.
The team was losing by three goals, but the coach told them all was not lost and to keep fighting.
Salma failed the first exam, but all is not lost — she can still pass if she does well on the final project.
To do something quickly or with great effort because you wish you had started doing it sooner.
After months of illness, Élise made up for lost time by travelling to three new countries.
The new manager made up for lost time by holding meetings every morning to fix old problems.
be lost in something
idiomTo be completely focused on something and not notice anything else.
Maya was lost in her book and didn't hear the doorbell.
Are you lost in thought again, or just ignoring me?
be lost on somebody
idiomTo not be understood or noticed by someone.
The teacher's joke was lost on the young students.
Why is the importance of this rule lost on you?
be lost to the world
idiomTo be so focused on something that you ignore everything around you.
When Diego plays video games, he is lost to the world.
Sara was lost to the world while painting her masterpiece.
get lost
idiomA rude way to tell someone to go away or to refuse something.
When the salesman knocked again, Brian shouted, 'Get lost!'
She told the annoying reporter to get lost.
To stop hoping that someone who is missing is still alive.
After three days, the rescue team gave the hiker up for lost.
The family refused to give their son up for lost.
Two people dislike each other.
There's no love lost between the two rival politicians.
There is little love lost between my cat and the neighbor's dog.
Word family
Synonym discussion
Sense: adjective/1
'Lost' is the most common and natural word for not knowing where you are. You use it when you cannot find your way home, or when you are in an unfamiliar area without directions. 'Disoriented' is more formal and includes confusion about time or direction — a patient waking up after surgery feels disoriented, not simply lost. 'Off course' applies mainly to vehicles, ships, or journeys: a plane blown off course by a storm. 'Astray' is more literary and often used in figurative contexts ('go astray' = become lost or misled). Compare: 'The child was lost in the supermarket' (everyday situation) versus 'The hikers went astray from the marked trail' (more formal, written). For everyday conversation, 'lost' is almost always the right choice.
Common collocations
Nouns
- lost child
- lost property
- lost luggage
- lost cause
- lost soul
- lost opportunity
- lost time
- lost generation
Adverbs
- completely lost
- totally lost
- hopelessly lost
- utterly lost
- badly lost
Phrases
- get lost
- feel lost
- be lost for words
- make up for lost time
- all is not lost
- no love lost
Prepositions
- lost in
- lost on
- lost at
- lost to
- lost among
Etymology
'Lost' comes from the Old English word 'losian', meaning 'to perish, lose, or destroy'. It was originally the past participle of the verb 'lose', which traces back through Middle English 'lossen' to Old English 'losian'. The adjective form emerged in the 13th century, first used to describe things that had been destroyed or ruined, and later extended to people who could not find their way. By the 16th century, figurative uses like 'lost in thought' and 'lost opportunity' had appeared, showing how the word expanded from physical loss to mental and emotional states.