faint

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”
• “faint colors”
• “a faint hissing sound”
• “a faint aroma”

lacking clarity or distinctness

• “a dim figure in the distance”
• “only a faint recollection”
• “shadowy figures in the gloom”
• “saw a vague outline of a building through the fog”
• “a few wispy memories of childhood”

lacking strength or vigor

• “damning with faint praise”
• “faint resistance”
• “feeble efforts”
• “a feeble voice”

weak and likely to lose consciousness

• “suddenly felt faint from the pain”
• “was sick and faint from hunger”
• “felt light in the head”
• “a swooning fit”
• “light-headed with wine”
• “light-headed from lack of sleep”

indistinctly understood or felt or perceived

• “a faint clue to the origin of the mystery”
• “haven”

lacking conviction or boldness or courage

• “faint heart ne”

pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain

a spontaneous loss of consciousness caused by insufficient blood to the brain