Eagle, bear, bats in Nice? (9)
I believe the answer is:
agreeable
'nice?' is the definition.
(I've seen this before)
'eagle bear bats' is the wordplay.
'bats' is an anagram indicator (slang for mad).
'eagle'+'bear'='eaglebear'
'eaglebear' anagrammed gives 'AGREEABLE'.
'in' acts as a link.
(Other definitions for agreeable that I've seen before include "delightful" , "Pleasant, pleasing" , "Cordial" , "In harmony; pleasant" , "Willing - nice" .)