Meaning of “appreciate” - Learner’s Dictionary

appreciate

verb uk us /əˈpriːʃieɪt/
VALUE [ T ]

B2 to understand how good something or someone is and be able to enjoy them:

There's no point buying him expensive wines - he doesn't appreciate them.
GRATEFUL [ T ]

B2 to feel grateful for something:

I'd really appreciate your help.
UNDERSTAND [ T ]

to understand something about a situation, especially that it is complicated or difficult:

[ + (that) ] I appreciate that it is a difficult decision for you to make.
INCREASE [ I ] formal

to increase in value:

Houses and antiques generally appreciate with time.

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