faint · adjective /feɪnt/
faint
B2 slight and not easy to notice, smell, hear, etc.
Dictionary examples:
a faint sound/noise/smell
She gave me a faint smile.
Learner example:
I heard a faint sound. (First Certificate in English; B2; Greek)
feel faint
C2 to feel very weak and as if you might fall down
Dictionary example:
Seeing all the blood made me feel faint.
Learner example:
Starting to feel faint, Fred quickly roused himself and ran out of the hotel as quickly as he could. (Certificate of Proficiency in English; C2; Chinese)
not have the faintest idea
C2 used to emphasize that you do not know something
Dictionary example:
I haven't the faintest idea what you're talking about.
Learner example:
Some twenty years ago, when I left my parents' home to go and live on my own, I was [given] four mugs. By whom? I haven't the faintest idea. (Certificate of Proficiency in English; C2; Dutch)
faint · verb I /feɪnt/
faint
B2 to suddenly become unconscious for a short time, usually falling down
Dictionary examples:
He faints at the sight of blood.
I nearly fainted in the heat.
Learner example:
The young girl was about to faint. (First Certificate in English; B2; Russian)