weaks

Lacking in force (usually strength) or ability.

Unable to sustain a great weight, pressure, or strain.

Unable to withstand temptation, urgency, persuasion, etc.; easily impressed, moved, or overcome; accessible; vulnerable.

Limp, soft.

Dilute, lacking in taste or potency.

(often with for) Having a strong, irrepressible emotional love for someone or (less often) something; sentimentally affected by such love.

Lacking in vigour or expression.

Not prevalent or effective, or not felt to be prevalent; not potent; feeble.

Not having power to convince; not supported by force of reason or truth; unsustained.

(slang) Bad or uncool.

(stock exchange) Tending towards lower prices.

(chemistry) That does not ionize completely into anions and cations in a solution.

(physics) One of the four fundamental forces associated with nuclear decay.

Resulting from, or indicating, lack of judgment, discernment, or firmness; unwise; hence, foolish.

(mathematics, logic) Having a narrow range of logical consequences; narrowly applicable. (Often contrasted with a strong statement which implies it.)

(grammar) Displaying a particular kind of inflection, including:

(Germanic languages, of verbs) Regular in inflection, lacking vowel changes and having a past tense with -d- or -t-.

(Germanic languages, of nouns) Showing less distinct grammatical endings.

(Germanic languages, of adjectives) Definite in meaning, often used with a definite article or similar word.

(photography) Lacking contrast.