Meaning of “faint” - Learner’s Dictionary

faint

adjective uk us /feɪnt/

B2 slight and not easy to notice, smell, hear, etc:

a faint smell of smoke
Faint laughter was coming from next door.
feel faint

to feel very weak and as if you might fall down:

Seeing all the blood made me feel faint.
faint hope/praise/chance, etc

very little hope, praise, chance, etc:

a faint hope of winning the gold medal
not have the faintest idea

used to emphasize that you do not know something:

[ + question word ] I haven't the faintest idea what you're talking about.

(Definition of “faint adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)