English definition of “faint”
› slight and not easy to notice, smell, hear, etc: a faint smell of smoke faint laughter 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.