Meaning of “unhappy” - Learner’s Dictionary

unhappy

adjective uk us /ʌnˈhæpi/
SAD

A2 sad:

an unhappy childhood
NOT SATISFIED

B1 not satisfied:

Giorgio was unhappy with his test results.
I'm unhappy about the situation.
unhappily adverb
unhappiness noun [ U ]

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