deficient in physical vigour; feeble or debilitated
not able to sustain or exert much weight, pressure, or strain
not able to resist external force or withstand attack
lacking a particular mental or intellectual quality, e.g. decisiveness, judgment, or discernment
not firmly decided; vacillating
unable to withstand temptation or persuasion
not factually grounded or logically presented
a weak argument
unable to function properly
weak eyes
having or involving a lack of skill or aptitude
weaker students
his weakest subject
lacking vigour of expression or effect
a weak joke
deficient in strength or flavour; dilute
weak coffee
deficient in the required quality or ingredient
My hand was weak in trumps
lacking normal intensity or potency
a weak strain of virus
not having or exerting authority or political power
weak government
tending towards a lower price
a weak market
in grammar, denoting of or being an English verb or verb conjugation that forms the past tense and past participle by adding the suffix -ed or -d or -t, or a similar verb or verb conjugation in other Germanic languages: compare strong
said of a syllable: unstressed
in chemistry, forming ions only slightly in solution
weak acids and bases