Mighty silly (5)
I believe the answer is:
apish
(Other definitions for apish that I've seen before include "Foolish; like a monkey" , "Foppish" , "Stupid" , "Silly" , "Foolish; simian" .)
I believe the answer is:
apish
(Other definitions for apish that I've seen before include "Foolish; like a monkey" , "Foppish" , "Stupid" , "Silly" , "Foolish; simian" .)