Tantrums (4)
I believe the answer is:
fits
'tantrums' is the definition.
('fit' can be a synonym of 'tantrum')
This is the entire clue.
(Other definitions for fits that I've seen before include "Paroxysms" , "Is of the right shape and size" , "Sudden uncontrollable attacks" , "Prepares" , "crises once" .)