Contraction of we had. / Contraction of we would.

(physics) One of the four fundamental forces that is associated with nuclear decay. Its gauge bosons are the W⁺, W⁻ and Z⁰ particles.

we will / we shall

The part of a system that is most likely to fail or cause problems.

Contraction of we are.

describing the weak nuclear force

(physics) The fundamental interaction responsible for the weak nuclear force.

(intransitive, idiomatic, informal) To fail to accomplish an accomplishable task or to make an attempt at less than maximum effort; to "half-ass" or "fake the funk".

Reduced; made less strong.

simple past tense and past participle of weaken