Adjective B1 — Intermediate /ˈædɪkwət/

Adequate — Definition, Examples & Pronunciation

Enough for the purpose, but perhaps nothing more — a precise and honest adjective for evaluating quality and quantity in English.

Quick Definition

Adequate (adjective) — satisfactory or acceptable in quality or quantity; enough for the purpose. Something adequate meets the required standard but does not necessarily exceed it. Synonyms: sufficient, satisfactory, acceptable.

What Does Adequate Mean?

Adequate comes from the Latin adaequatus, meaning "made equal to" — equal to what is needed or required. The word describes something that meets the minimum standard: not too little, but not impressive either. It sits in neutral territory between poor and good.

In everyday English, adequate describes resources, time, preparation, conditions, and performance. "Is there adequate time to finish?" or "The ventilation in the room is barely adequate." The word often carries a mildly underwhelming tone — something adequate has passed the test, but only just. When a teacher calls a student's essay "adequate", that student should not celebrate.

English learners sometimes confuse adequate with enough or sufficient. While these overlap, adequate is more formal and frequently describes quality as well as quantity. You might say "enough apples" but "adequate preparation" — the latter implies a judgement about whether a standard has been met, not merely a count of items. In formal and professional writing, adequate is far more common than the informal enough.

Example Sentences

Sentence Usage note
The students had adequate time to complete the exam. adequate + noun — time
Her explanation was adequate, though not entirely convincing. predicate adjective after linking verb
We need to ensure adequate funding for the new project. formal / business register
The shelter provided adequate protection from the rain. adequate + noun — conditions
His performance at the interview was adequate but lacked the spark of a top candidate. evaluation / assessment context
Please give us adequate notice before cancelling your appointment. legal / professional collocation
The school's facilities are barely adequate for the number of pupils enrolled. barely adequate — borderline sufficiency
An adequate diet includes a balance of proteins, carbohydrates, and vitamins. health / nutrition context

Word Forms

Form Word Example sentence
Adjective adequate The salary is adequate for an entry-level position.
Adverb adequately She was not adequately prepared for the interview.
Noun adequacy Experts questioned the adequacy of the safety measures.
Negative adjective inadequate The funding proved to be wholly inadequate for the task.
Negative adverb inadequately The risks were inadequately communicated to patients.
Negative noun inadequacy He felt a deep sense of inadequacy in his new role.

Common Collocations

Collocation Example phrase
adequate preparation Students need adequate preparation before sitting public exams.
adequate funding The charity struggled due to a lack of adequate funding.
adequate resources Teachers must have adequate resources to do their jobs well.
adequate notice Employees must receive adequate notice of any changes to their shifts.
adequate provision The council must make adequate provision for housing those in need.
adequate explanation No adequate explanation was given for the long delay.
barely adequate The heating in the old building was barely adequate during winter.
deemed adequate The inspector deemed the safety procedures adequate and signed off the site.

Common Mistakes

Watch Out For

The preparation was adequate enough for the test.

The preparation was adequate for the test. ("Adequate enough" is redundant — adequate already means "enough". Drop "enough".)

She felt very adequate at the new task.

She felt adequately prepared for the new task. (Adequate rarely describes feelings directly. Use the adverb adequately or choose a different adjective.)

The room was adequate of space for the meeting.

The room was adequate for the meeting. (Use adequate + for, not adequate + of. "Adequate of" is not standard English.)

Synonyms

sufficient satisfactory acceptable passable tolerable reasonable competent

Antonyms

inadequate insufficient deficient lacking unsatisfactory poor

Related Vocabulary

enough quality standard appropriate suitable accept condition All Common Words →

Practise This Word

Flash Cards Complete the Sentence Cloze Dropdown

Frequently Asked Questions about “adequate”

What does adequate mean?
Adequate means satisfactory or acceptable in quality or quantity — enough for a particular purpose, but not necessarily excellent or more than required. Example: 'The student's essay was adequate but lacked original ideas.' It implies meeting the minimum standard, not exceeding it.
Is adequate a positive or negative word?
Adequate is generally neutral to slightly negative in tone. While it confirms that something meets the required standard, it implies no more than that. Saying someone's work is 'adequate' suggests it is acceptable but unremarkable. In most contexts, 'good', 'excellent', or 'outstanding' would be more flattering.
What is the difference between adequate and sufficient?
Both adequate and sufficient mean 'enough for the purpose', and they are often interchangeable. However, sufficient is slightly more neutral and formal, focusing purely on quantity ('sufficient funds'). Adequate can carry a hint of 'barely enough' and is sometimes used to describe quality as well as quantity ('an adequate performance').
How do you use adequate in a sentence?
Adequate is typically used before a noun ('adequate preparation', 'adequate resources') or after a linking verb ('The room is adequate for two people'). You can also use it with 'to' followed by a verb: 'The budget is adequate to cover our costs.' Avoid the redundant phrase 'adequate enough'.
What is the adverb form of adequate?
The adverb form is adequately. Example: 'The candidates were not adequately prepared for the interview.' Use adequately when you want to describe how well an action is performed — well enough, but not necessarily to a high standard. The noun form is adequacy.
What is the opposite of adequate?
The most direct antonym of adequate is inadequate, meaning not enough or not good enough. Other antonyms include insufficient, lacking, deficient, and unsatisfactory. In a more positive direction, words like excellent, outstanding, and exceptional go well beyond what adequate implies.
Can adequate describe a person?
Yes, adequate can describe a person's performance or ability, though it is rarely flattering. 'She is an adequate teacher' means she meets the basic standard but is not especially good. In professional contexts, describing someone as 'adequate' rather than 'competent' or 'skilled' signals mild dissatisfaction.
What are common collocations with adequate?
Common collocations include: adequate preparation, adequate funding, adequate resources, adequate time, adequate provision, adequate explanation, adequate standard, and adequate notice. In legal and business English, 'adequate notice' and 'adequate compensation' are particularly frequent.
What is the origin of the word adequate?
Adequate comes from the Latin word 'adaequatus', the past participle of 'adaequare' (to make equal to), from 'ad-' (to) and 'aequus' (equal, level). It entered English in the early 17th century with the sense of being equal to what is required — precisely matching a need or standard.
How can I practise using adequate in English?
LexFizz's Flash Cards cover adjectives like adequate in context. Try the Complete the Sentence exercise to practise choosing between adequate, sufficient, and satisfactory. Writing evaluation sentences — reviewing a film, a meal, or a service — is an excellent way to use adequate naturally.