vital

vital — adjective

1. So important or necessary that without it, a plan, system, activity, or living t

1.adjectiveB1
Definition

So important or necessary that without it, a plan, system, activity, or living thing would fail or be unable to continue.

Example

Clean drinking water is vital for the health of every community.

collocation: vital for [something]

The fire department plays a vital role in keeping the city safe.

collocation: vital role in [something]

Common collocations
  • vital for
  • vital to
  • vital role
  • vital importance
  • vital part
  • vital information
  • vital clue
Synonyms
  • essential

    very close in meaning; 'vital' often implies something is needed for continued existence, while 'essential' is used more broadly for any important component.

  • crucial

    focuses on a decisive moment or turning point; 'vital' is broader in scope.

  • critical

    emphasises a situation at a point of crisis or potential failure; can carry a stronger sense of urgency than 'vital'.

Antonyms
  • unnecessary

    complete opposite; 'vital' implies necessity, while 'unnecessary' means not needed at all.

  • nonessential

    common in business and logistics contexts to describe something that can be done without.

Grammar Patterns

vital + noun

it is vital that + clause (subjunctive)

vital for [someone/something]

vital to [someone/something]

Usage Note

Frequently used in the pattern 'it is vital that + clause', where the verb in the that-clause is often in the subjunctive form (e.g., It is vital that every student receive training). The prepositions 'for' and 'to' introduce the purpose or beneficiary (vital for the project, vital to our success).

Common Mistakes

It is vital important to arrive early.
It is vital to arrive early.' or 'It is vitally important to arrive early.
'vital' is an adjective, so it cannot modify another adjective; use the adverb 'vitally' before 'important'.

2. Having or showing an eager, lively energy that makes a person, place, or perform

2.adjectiveB2
Definition

Having or showing an eager, lively energy that makes a person, place, or performance feel active and animated.

Example

Mira's vital energy filled the room as she described her travel adventures.

collocation: vital energy

The children were still vital and playful after a long day at the theme park.

Common collocations
  • vital energy
  • vital spirit
  • vital presence
Synonyms
  • energetic

    more common and neutral in everyday speech; 'vital' carries an additional nuance of inner life force.

  • lively

    focuses on outward activity and spirit; 'vital' can imply deeper, more sustained energy.

  • vigorous

    suggests physical strength and healthy energy; 'vital' is more often about personality and spirit.

Antonyms
  • lethargic

    the opposite of having lively energy and enthusiasm.

  • lifeless

    contrasts with the 'full of life' meaning that 'vital' carries in this sense.

Grammar Patterns

vital + noun

be + vital

Usage Note

Less common than sense 1 (ESSENTIAL); this meaning can sound formal or literary. In everyday conversation, 'energetic' or 'lively' are more natural alternatives.

Common Mistakes

She is a very vital person who exercises daily.
She is a very energetic person who exercises daily.
For describing everyday physical energy, 'energetic' is more natural; 'vital' in this sense carries a more literary or formal tone.

3. Connected with the basic biological functions and processes that keep living bei

3.adjectiveB2
Definition

Connected with the basic biological functions and processes that keep living beings alive, such as the beating of the heart or the flow of blood through the body.

Example

The brain is the most vital organ, controlling everything the body does.

collocation: vital organ

Nurses monitored Obi's vital signs throughout the night after his surgery.

collocation: vital signs

Common collocations
  • vital signs
  • vital organs
  • vital functions
  • vital processes
  • vital task
Synonyms
  • life-sustaining

    more literal and descriptive; 'vital' is more common as a compact medical term.

  • biological

    broader in scope; 'vital' specifically relates to processes necessary for staying alive.

Antonyms
  • non-living

    in biological contexts, describes matter or processes unrelated to life.

Grammar Patterns

vital + noun

Usage Note

Common in medical and biological writing. Frequently appears in fixed phrases such as 'vital signs' (pulse, temperature, blood pressure, breathing rate), 'vital organs' (heart, lungs, brain, kidneys, liver), and 'vital functions' (breathing, circulation, digestion).

Common Mistakes

The doctor checked his vital signs and said there were no vital concerns.
The doctor checked his vital signs and said there were no major concerns.
In medical contexts, 'vital' is used in specific fixed phrases like 'vital signs' and 'vital organs'; it is not a general substitute for 'important'.

Word family

  • vitally
    adverbB2
  • vitality
    nounB2
  • vitalize
    verbC1
  • revitalize
    verbC1

Synonym discussion

Sense: adjective/1

Vital, essential, crucial, and critical all describe something of great importance, but they differ in nuance and context. Essential suggests something that is fundamentally necessary for a purpose beyond which nothing else matters (e.g., 'Water is essential for human survival'). Vital emphasises something needed for continued existence or successful functioning, often carrying a sense of life-or-death urgency (e.g., 'A healthy heart is vital to life'). Crucial points to a decisive moment or factor on which the entire outcome depends (e.g., 'The next goal is crucial for winning the match'). Critical implies a situation at a point of crisis where failure is imminent without intervention (e.g., 'Finding a matching donor is critical for the patient'). While the four words overlap significantly, vital and essential are the broadest in use, covering both concrete needs and abstract importance, whereas crucial and critical tend toward specific, high-stakes turning points.

essential ↗crucial ↗critical ↗vital ↗

Common collocations

Adverbs

  • absolutely vital
  • truly vital
  • especially vital
  • equally vital

Phrases

  • of vital importance

Etymology

LatinFrenchEnglish

Vital comes from Latin 'vitalis', meaning 'belonging to or concerning life', which itself derives from 'vita', the Latin word for 'life'. The word entered English through Old French in the late 14th century, originally carrying only the meaning of 'pertaining to life' (as in vital organs). By the late 16th century, English speakers had extended it metaphorically to describe anything considered as important as life itself, giving rise to the modern meaning of 'extremely important or essential'.