Takes half-term in a hurry (5)
I believe the answer is:
haste
'in a hurry' is the definition.
(I've seen this before)
'takes half-term' is the wordplay.
'takes' becomes 'has' ('have' can be a synonym of 'take').
'half-term' becomes 'te'.
'has'+'te'='HASTE'
(Other definitions for haste that I've seen before include "Inconsiderate speed" , "Undue speed" , "Promptitude" , "impetuosity" , "Leader abandons modest" .)