Definition of “fine” - Learner’s Dictionary

fine

adjective uk us /faɪn/
WELL

A1 well, healthy, or happy:

"How are you?" "I'm fine thanks. And you?"
I had a cold last week, but I'm fine now.
GOOD

A2 good or good enough:

"Is the soup hot enough?" "Yes, it's fine."
EXCELLENT

B2 excellent, or of very good quality:

fine wines
He's a fine musician.
(that's) fine

A1 used to agree with a suggestion, idea, decision, etc:

"Shall we meet at 8 o'clock?" "Yes, that's fine by me."
THIN

thin or made of very small pieces:

fine, brown hair
fine sand
SUNNY mainly UK

B1 sunny and not raining:

If it's fine, we could have a picnic.
the finer details/points, etc of sth

the more detailed or more difficult parts of an argument, idea, etc

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