Meaning of “better” - Learner’s Dictionary

better

adjective uk us /ˈbetər/
QUALITY

A1 comparative of good adjective : of a higher quality, more effective, or more enjoyable than something or someone else:

Jeff's been offered a better job in the States.
The sales figures were better than expected.
Her English has got a lot better (= improved) recently.
It would have been better to have discussed the problem first.
ILLNESS

A1 healthy, or less sick than before:

I feel much better.
I hope you get better soon.
the bigger/brighter/hotter, etc the better

used to say that the bigger, brighter, hotter, etc something is, the more pleased you will be

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