Synonyms of weak

weak 1 of 3

adjective (1)

ˈwēk 

1

as in weakened

lacking bodily strength

the little boy was simply too weak to lift the box

Synonyms & Similar Words

• weakened
• feeble
• frail
• disabled
• faint
• enfeebled
• debilitated
• wimpy
• soft
• paralyzed
• slight
• infirm
• vulnerable
• low
• tired
• softened
• wasted
• exhausted
• asthenic
• unsubstantial
• injured
• languid
• fragile
• incapacitated
• delicate
• prostrate
• down-and-out
• wimpish
• effete
• weary
• enervated
• sapped
• tender
• challenged
• invalid
• prostrated
• unsteady
• powerless
• drained
• damaged
• impotent
• dizzy
• decrepit
• flimsy
• susceptible
• hurt
• lame
• impaired
• rocky
• breakable
• groggy
• woozy
• broken-down
• flagging
• unsound
• yielding
• harmed
• worn-out
• unresistant
• resistless

Antonyms & Near Antonyms

• strong
• powerful
• mighty
• stout
• muscular
• rugged
• tough
• athletic
• stalwart
• robust
• hard
• virile
• sturdy
• beefy
• fit
• brawny
• hardy
• sinewy
• husky
• strengthened
• lusty
• hardened
• vigorous
• able-bodied
• energetic
• fortified
• healthy
• sound
• capable
• competent
• energized
• strapping
• toughened
• hale
• recovering
• red-blooded
• inured
• invigorated
• vitalized
• convalescing
• recuperating

2

as in soft

lacking strength of will or character

I was too weak to resist the free doughnuts in the office break room

Synonyms & Similar Words

• weakened
• soft
• frail
• meek
• corrupt
• timid
• wimpy
• spineless
• wet
• wimpish
• nerveless
• characterless
• weakling
• invertebrate
• weak-kneed
• effete
• milk-and-water
• wishy-washy
• ineffective
• ineffectual
• flabby
• limp-wristed
• powerless
• flaccid
• impotent
• namby-pamby
• craven
• forceless
• villainous
• emasculated
• submissive
• unnerved
• unscrupulous
• unprincipled
• pliable
• pusillanimous
• cowardly
• lamblike
• infirm
• irresolute
• dastardly
• impuissant
• sissy
• fainthearted
• vacillating
• nebbishy
• lily-livered
• poltroon

Antonyms & Near Antonyms

• strong
• tough
• hard
• good
• firm
• moral
• right
• virtuous
• righteous
• ethical
• upright
• principled
• backboned
• resolute
• unrelenting
• determined
• courageous
• stalwart
• mettlesome
• stouthearted

3

as in thin

not containing very much of some important element

the coffee came out too weak because I didn't use enough ground beans

Synonyms & Similar Words

• thin
• dilute
• diluted
• thinned
• weakened
• washy
• watery
• adulterated
• watered-down

Antonyms & Near Antonyms

• strong
• rich
• fortified
• enriched
• concentrated
• full-bodied
• condensed
• evaporated

4

as in unreasonable

not using or following good reasoning

your argument is weak

Synonyms & Similar Words

• unreasonable
• irrational
• unreasoning
• illegitimate
• misleading
• foolish
• unreasoned
• illogical
• invalid
• absurd
• silly
• fallacious
• inconsistent
• unsound
• inconsequential
• weird
• nonrational
• inconsequent
• meaningless
• unusual
• odd
• strange
• specious
• misguided
• sophistical
• insane
• random
• sophistic
• disorganized
• unconvincing
• eristical
• disordered
• unconsidered
• mad
• nonsensical
• asinine
• surreal
• inexplicable
• ill-advised
• eristic
• half-baked
• unaccountable
• nutty
• whacky
• peculiar
• preposterous
• senseless
• unexplainable
• wacky
• rambling
• reasonless
• Kafkaesque

Antonyms & Near Antonyms

• reasonable
• valid
• logical
• sound
• rational
• wise
• sensible
• sane
• solid
• sober
• justified
• enlightened
• just
• reasoned
• clear
• informed
• well-founded
• convincing
• certain
• compelling
• well-grounded
• plausible
• persuasive
• true
• organized
• satisfying
• credible
• sure
• commonsense
• ordered
• demonstrated
• cogent
• confirmed
• established
• validated
• substantiated
• corroborated

5

as in helpless

unable to act or achieve one's purpose

the vice president is a relatively weak official

Synonyms & Similar Words

• helpless
• paralyzed
• incompetent
• powerless
• impotent
• passive
• high and dry
• incapable
• feeble
• useless
• ineffective
• unfit
• handcuffed
• ineffectual
• hamstrung
• impuissant
• hog-tied
• infirm
• inept
• spineless
• frail
• supine
• unaggressive

Antonyms & Near Antonyms

• strong
• powerful
• mighty
• effective
• able
• capable
• potent
• efficient
• competent
• dominant
• important
• authoritarian
• tyrannical
• dynamic
• despotic
• autocratic
• robust
• tough
• dictatorial
• vigorous
• sturdy
• major
• puissant
• energetic
• forceful
• significant
• magisterial
• tyrannic
• senior
• autocratical
• top
• high-level

weakly

2 of 3

adjective (2)

ˈwē-klē 

as in fragile

chronically or repeatedly suffering from poor health

a weakly baby who required repeated hospitalizations

Synonyms & Similar Words

• fragile
• weak
• frail
• sickly
• invalid
• dying
• sick
• feeble
• ailing
• fading
• poorly
• lame
• weakened
• delicate
• challenged
• bedridden
• incapacitated
• moribund
• ill
• debilitated
• incurable
• enfeebled
• bedfast
• infirm
• unwell
• decrepit
• indisposed
• unsound
• unhealthy
• peaked
• worn-out
• run-down

Antonyms & Near Antonyms

• well
• healthy
• whole
• sound
• wholesome
• hale
• hearty
• fit
• well-conditioned
• able-bodied

weakly

3 of 3

adverb

as in feebly

Synonyms & Similar Words

• feebly
• faintly
• softly
• gently
• shakily
• delicately
• lazily
• halfheartedly
• languidly
• listlessly
• frailly
• lamely
• ineffectively
• ineffectually
• uncertainly
• bloodlessly
• impotently
• spinelessly
• nervelessly
• spiritlessly

Antonyms & Near Antonyms

• strongly
• firmly
• vigorously
• forcefully
• energetically
• powerfully
• stiffly
• forcibly
• stoutly
• dynamically
• hard
• strenuously
• sharply
• sturdily
• roundly
• explosively
• mightily
• violently
• fiercely
• vehemently
• robustly
• muscularly
• actively
• briskly
• heartily
• eagerly
• crisply
• roughshod
• lustily
• gamely
• animatedly
• spiritedly
• hammer and tongs
• vivaciously
• snappily
• spunkily

Try This Instead

For

Try This

a weak position

a vulnerable position

a susceptible position

an insecure position

a fragile position

a poor position

a weak economy

a feeble economy

a vulnerable economy

a fragile economy

an unstable economy

a frail economy

weak signals

poor signals

poor-quality signals

unreliable signals

insufficient signals

inadequate signals

a weak solution

an inconsistent solution

an inadequate solution

an ineffectual solution

a faulty solution

a deficient solution

a weak smile

a feeble smile

a pathetic smile

a faint smile

a limp smile

an unconvincing smile

Example Sentences

Recent Examples of weak

Adjective

The pavement becomes weaker because of the crack, and as the cracks continue to grow, the heat can cause the road to warp and become a little more dangerous for drivers. —Joseph Hernandez, Kansas City Star, 26 June 2025

General Mills, the company behind Pillsbury and Progresso soups, fell 4.1% after reporting weaker revenue for the latest quarter than analysts expected, though its profit topped forecasts. —Matt Ott, Chicago Tribune, 25 June 2025

The backlash also comes amid troubling financial news for McDonald’s, which recently reported its weakest U.S. sales quarter since the COVID-19 pandemic began. —Preezy Brown, VIBE.com, 25 June 2025

In sum, there is a weak case, at best, for some kind of standardization of non-financial KPIs. —Shivaram Rajgopal, Forbes.com, 14 June 2025