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Definitions

lack

[lak] / læk /
NOUN
deficiency, need
Synonyms
STRONGEST
absence dearth inadequacy loss paucity poverty reduction scarcity shortage shortcoming shortfall
STRONG
abridgement curtailment decrease default defect deficit depletion deprivation destitution distress exigency exiguity inferiority insufficiency meagerness miss necessity privation retrenchment scantiness shortness shrinkage shrinking slightness stint want
WEAK
insufficience
Antonyms
STRONGEST
abundance affluence enough excess plenty success sufficiency
STRONG
addition advantage enlargement expansion increase perfection
WEAK
extra lot plethora profusion surplus
VERB
do not have
Synonyms
STRONGEST
need require want
STRONG
minus miss out
WEAK
be deficient in be short of be without have need of hurting for not got too little too late
Antonyms
STRONGEST
dislike have

Usage

What are other ways to say lack? The verb lack means to be without or to have less than a desirable quantity of something: to lack courage, sufficient money, enough members to make a quorum. Need often suggests urgency, stressing the necessity of supplying what is lacking: to need an operation, better food, a match to light the fire. Require, which expresses necessity as strongly as need, occurs most frequently in serious or formal contexts: Your presence at the hearing is required. Successful experimentation requires careful attention to detail.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As she switched into fifteens from sevens, her lack of power and confidence in contact was exposed.

From BBC • Apr. 15, 2026

While not doubting his capabilities and dedication, some have questioned Velasco’s relative lack of experience in a prestige post traditionally occupied by party notables with decades of public service.

From Los Angeles Times • Apr. 14, 2026

The questions were as follows: How much of the time do you feel you lack companionship?,

From Science Daily • Apr. 14, 2026

Ideaya’s treatment targets an aggressive form of uveal melanoma that generally has a poor prognosis because it occurs in patients who lack the genetic marker to receive typical immunotherapy.

From Barron's • Apr. 13, 2026

Quiet by nature, she lamented the lack of privacy in the dormitory she shared with ten other girls.

From "Hitler Youth: Growing Up in Hitler's Shadow" by Susan Campbell Bartoletti

Vocabulary lists containing lack

Zilch, Zip, Nada: Words For Nothing

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ACT Vocabulary List

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Nobody's Home: Synonyms For "Absent"

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!