Weird dodo, endlessly confused (3)
I believe the answer is:
odd
'weird' is the definition.
(thesaurus)
'dodo endlessly confused' is the wordplay.
'endlessly' means to remove the last letter.
'confused' indicates an anagram.
'dodo' with its final letter taken away is 'dod'.
'dod' anagrammed gives 'ODD'.
(Other definitions for odd that I've seen before include "Peculiar or eccentric" , "unlike 1984" , "Peculiar in uneven way" , "Strange, peculiar" , "Unmatched" .)