avid

US /ˈæv.ɪd/
UK /ˈæv.ɪd/
1.

gemar

having or showing a keen interest in or enthusiasm for something.

:
•
an avid reader of science fiction
:
keeneagerenthusiasticardentpassionatedevoteddedicatedferventfervidzealousfanaticalvoraciousinsatiablewholeheartedearnest
:
apathetichalfhearted