adj. Lacking strength; weak; languid; inclined to swoon; as, faint with fatigue, hunger, or thirst.adj. Wanting in courage, spirit, or energy; timorous; cowardly; dejected; depressed.adj. Lacking distinctness; hardly perceptible; striking the senses feebly; not bright, or loud, or sharp, or forcible; weak; as, a faint color, or sound.adj. Performed, done, or acted, in a weak or feeble manner; not exhibiting vigor, strength, or energy; slight; as, faint efforts; faint resistance.n. The act of fainting.n. The state of one who has fainted; a swoon.v. To lose consciousness. Caused by a lack of oxygen or nutrients to the brain, usually as a result of a suddenly reduced blood flow (may be caused by emotional trauma, loss of blood or various medical conditions).