(informal) Expresses dismay or annoyance, especially at misfortune.

(archaic) second-person singular simple past form of will

An expression of dismissiveness or disappointment concerning a statement, question, explanation, course of action, or occurrence involving hypothetical possibilities, uncertain facts, or missed opportunities.New York Times, May 15, 1994): "The order of words in this delicious morsel of dialect varies with the user. . . . In this rhyming compound, a triple elision does the hat trick: although each elision expresses something different, when taken together, the trio conveys a unified meaning. Shoulda, short for should have (and not should of, which lexies call a variant but I call a mistake), carries a sense of correctness or obligation; coulda implies a possibility, and woulda denotes conditional certainty, an oxymoron: the stated intent to have taken an action if only something had not intervened. . . . Taken together, the term means 'Spare me the useless excuses.'" (This stems from expressing that someone could have, would have and/or should have done something)

(idiomatic) The identified person appears to be benign, mild-mannered, or calm (but with an integral suggestion that, to the contrary, he or she really is untrustworthy, disagreeable, or mean-spirited).