Definition of faint

• a spontaneous loss of consciousness caused by insufficient blood to the brain
• pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain
• deficient in magnitude; barely perceptible; lacking clarity or brightness or loudness etc; "a faint outline"; "the wan sun cast faint shadows"; "the faint light of a distant candle"; "weak colors"; "a faint hissing sound"; "a faint aroma"; "a weak pulse"