Insignificant type flustered about time (5)
I believe the answer is:
petty
'insignificant' is the definition.
(I've seen this before)
'type flustered about time' is the wordplay.
'flustered' is an anagram indicator.
'about' indicates putting letters inside.
'time' becomes 't' (abbreviation).
'type' with letters rearranged gives 'pety'.
'pety' placed around 't' is 'PETTY'.
(Other definitions for petty that I've seen before include "Inferior" , "Marked by narrowness of mind" , "small" , "Small-time" , "Trivial - small-minded" .)