A bit pushy but easily frightened (3)
I believe the answer is:
shy
'easily frightened' is the definition.
(I've seen this in another clue)
'a bit pushy but' is the wordplay.
'a bit' indicates a hidden word (the answer is formed by a bit of the clue).
'SHY' is hidden in the letters of 'pushy but'.
(Other definitions for shy that I've seen before include "Short of" , "Bashful or timid" , "Demure" , "Timid and self-conscious" , "Quick throw" .)