untidy

untidy — adjective

1. Not in a neatly ordered state, with things spread around or left in the wrong pl

1.adjectiveA2
Definition

Not in a neatly ordered state, with things spread around or left in the wrong places so that a room, desk, or other space looks messy.

Example

Reuben's bedroom was so untidy that he could not find his school shoes under the bed.

so untidy that [result clause]

The kitchen looked untidy after Élise and her cousins finished decorating the birthday cake.

predicative: look untidy

Common collocations
  • untidy room
  • untidy desk
  • untidy house
  • untidy pile
  • look untidy
  • untidy appearance
Synonyms
  • messy

    more common in everyday speech; has the same core meaning

  • cluttered

    suggests too many things filling a space, not just disorder

  • disordered

    more formal; focuses on the lack of a system or arrangement

Antonyms
  • tidy

    things put neatly in their proper places

  • neat

    carefully arranged and clean-looking

Grammar Patterns

untidy + noun

linking verb + untidy

Common Mistakes

The floor was untidy because it was covered in mud.
The floor was untidy because clothes were lying all over it.
Untidy describes disorder or things being out of place, not dirtiness or uncleanliness.

2. (of a person) having the habit of not putting things away or not keeping one's s

2.adjectiveB1
Definition

(of a person) having the habit of not putting things away or not keeping one's surroundings in order, often leaving a mess behind.

Example

Bilal is such an untidy person that his roommates always complain about the mess in the living room.

such an untidy person that [result]

Renata's untidy habits meant she often lost her keys somewhere around the house.

collocation: untidy habits

Common collocations
  • untidy person
  • untidy habits
  • untidy by nature
Synonyms
  • messy

    more informal; describes both things and people

  • sloppy

    also suggests carelessness in work or appearance

Antonyms
  • tidy

    keeping things in order

  • neat

    careful about order and cleanliness

Grammar Patterns

untidy + noun (person/habit)

linking verb + untidy (person)

Usage Note

Frequently used in predicative position ('she is untidy') when describing a person's general character, rather than a temporary state. Distinguish from sense 1 (IN DISARRAY), which describes a place or thing rather than a person's nature.

3. Happening or done in a way that lacks clear structure or proper planning, often

3.adjectiveB2
Definition

Happening or done in a way that lacks clear structure or proper planning, often producing a result that is not satisfactory.

Example

The election process was untidy, with many people questioning how the votes were counted.

abstract use: untidy process

Hui's notes from the meeting were so untidy that nobody could follow what had been decided.

so untidy that [result clause] with abstract subject

Common collocations
  • untidy process
  • untidy handling
  • untidy arrangement
  • untidy planning
Synonyms
  • disorganized

    focuses on lack of planning or system

  • chaotic

    stronger; suggests complete confusion and lack of control

  • messy

    informal; can describe both physical and abstract situations

Antonyms

Grammar Patterns

untidy + noun (abstract)

linking verb + untidy (situation)

Usage Note

Typically used with abstract nouns such as 'process', 'handling', 'planning', or 'arrangement'. Unlike sense 1 (physical disorder), this sense refers to a lack of method or organisation in activities or systems.

Word family

  • tidy
    adjectiveA2
  • tidy
    verbB1
  • tidily
    adverbB2
  • tidiness
    nounB2
  • untidily
    adverbB2

Synonym discussion

Sense: adjective/1

All four words describe a lack of neatness, but they differ in scope and emphasis. Messy is the most general and informal term — you can use it for a room, a person's appearance, or an abstract situation. Cluttered specifically means too many things are crowded into a space, which makes it look disorganised; a desk can be cluttered even if each pile is carefully stacked. Disordered is more formal and focuses on the absence of a proper arrangement or system. Disorganized looks at the cause rather than the appearance: something is disorganized because there was no plan or method behind it. For example, 'Elise's cluttered shelf had fifteen books stacked sideways, but her wardrobe was perfectly tidy' shows that cluttered does not mean everything is a mess — just crowded.

messy ↗cluttered ↗disordereddisorganized ↗

Common collocations

Nouns

  • untidy state
  • untidy condition

Adverbs

  • extremely untidy
  • rather untidy
  • very untidy
  • somewhat untidy
  • hopelessly untidy

Phrases

  • look untidy
  • become untidy
  • remain untidy
  • get untidy

Prepositions

  • untidy in appearance
  • untidy about the house

Etymology

Old EnglishMiddle EnglishEnglish

Untidy is formed by adding the prefix 'un-' (meaning 'not') to the adjective 'tidy'. Tidy originally entered English from the Middle English word 'tidy' meaning 'timely' or 'in season', which came from 'tide' (a period of time). Over time, 'tidy' shifted from 'timely' to 'well-ordered and neat', and 'untidy' took on its current meaning of 'not neat or orderly'.