weak

1. (often with for) Having a strong, irrepressible emotional love for someone or (less often) something; sentimentally affected by such love.Examples: "'Cause sugar pie, honey bunch You know that I'm weak for you Can't help myself I love you and nobody else"; "It’s really good to hear your voice Sayin' my name, it sounds so sweet Comin' from the lips of an angel Hearin' those words, it makes me weak"often

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

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

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

5. (chemistry) That does not ionize completely into anions and cations in a solution.Examples: "a weak acid"; "a weak base"; "When we say that an acid is weak, we refer only to its degree of dissociation, not to its degree of corrosiveness; but it is true that those two traits often correlate, though."

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