Evil; ill; vicious; wicked; depraved: applied to persons, conduct, character, influence, etc.: as, a bad man; bad conduct; a bad life; a bad heart; bad influence, etc.Offensive; disagreeable; troublesome; painful; grievous: as, bad treatment; a bad temper; it is too bad that you had to wait so long.Hurtful; noxious; having an injurious or unfavorable tendency or effect: with for: as, bad air or bad food; late hours are bad for the health; this step would be bad for your reputation or prospects.Ill; in ill health; sick; in unsound condition: as, to feel bad; to be bad with rheumatism; a bad hand or leg.Not good; defective; worthless; poor; of no value: as, bad coin; bad debts; a bad soil; a bad crop; a bad piece of work; bad health.Incorrect; faulty: as, a bad aim; bad English; a bad pronunciation.Not valid; not sound: as, a bad claim; a bad plea.Unfavorable; unfortunate: as, bad news; bad success.[Bad is the ordinary antithesis of good, in all its senses, whether positively, ‘evil,’ ‘harmful,’ or negatively, ‘not good,’ ‘not satisfactory,’ and whether substantively, ‘being evil,’ or causally, ‘causing harm.’ The senses run into one another, the precise application being determined by the context.]n. That which is bad. A bad condition: as, to go to the bad (see below). A bad thing: as, there are bads and goods among them.n. Preterit of bid.