Smart guy (4)

I think it could be either:

Which length description are you looking for?:

alec

'smart guy' is the definition.
(as in the phrase 'smart Alec')

This is all the clue.

(Other definitions for alec that I've seen before include "Actor Guinness is smart" , "Sir -- Guinness, actor" , "Smart chap" , "Boy's name (a smart one?)" , "Smart man?" .)

I've seen this clue in The Mirror and the Universal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.