Definition Of weaker
denoting a class of verbs in Germanic languages that form the past tense and past participle by addition of a suffix (in English, typically -ed ); contrasted with strong.
Some phrasal verbs prefer a weak form (contrast The car sped up the hill and The car speeded up).
lacking intensity or brightness.
a weak light from a single street lamp
lacking the power to perform physically demanding tasks; lacking physical strength and energy.
she was recovering from the flu and was very weak
liable to break or give way under pressure; easily damaged.
the salamander's tail may be broken off at a weak spot near the base
of, relating to, or denoting the weakest of the known kinds of force between particles, which acts only at distances less than about 10 −15 cm, is very much weaker than the electromagnetic and the strong interactions, and conserves neither strangeness, parity, nor isospin.
Thus, the strengths of the electromagnetic, weak , and strong forces depend upon the energy at which they are measured.