Angry at time I take off (7)
I believe the answer is:
imitate
'take off' is the definition.
(I've seen this before)
'angry at time i' is the wordplay.
'angry' indicates anagramming the letters.
'at'+'time'+'i'='attimei'
'attimei' anagrammed gives 'IMITATE'.
(Other definitions for imitate that I've seen before include "I tame it to copy it" , "Copy, simulate" , "Appear like, in behaviour or appearance" , "Take as a model" , "Mimic or follow as a model" .)