During Easter, normally, it's tough (5)
I believe the answer is:
stern
'tough' is the definition.
(I've seen this in another clue)
'during easter normally it's' is the wordplay.
'during' says the answer is hidden in the clue.
'STERN' is hidden within 'easter normally ts'.
(Other definitions for stern that I've seen before include "Strict, austere" , "Rents out at rear of boat" , "at the back of the galley!" , "Unrelenting at the back of the boat?" , "Severe in the rear of the ship?" .)