Brainy (5)
'brainy' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for intelligent that I've seen before include "Endowed with the faculty of reason" , "quick on the uptake" , "Able to reason, bright" , "Knowledgeable" , "Mentally acute" .)
'brainy' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for smart that I've seen before include "Well turned out" , "turned out nicely" , "Rankle; trim" , "Intelligent; sting" , "having chips in" .)
(Other definitions for nerdy that I've seen before include "Boringly studious" , "obsessive" , "Geeky" , "Bright but socially inept" .)
'brainy' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for clever that I've seen before include "& 18 Down Smart Alec" , "Deft, able, bright" , "Box ---, outwit someone" , "Quick-minded" , "Quick at learning and understanding" .)