Crossword Genius

Easiest assignments — only some needed rests (7)

Ross

I believe the answer is:

siestas

'rests' is the definition.
(a siesta is a small sleep)

'easiest assignments only some' is the wordplay.
'only some' indicates a hidden word.
'SIESTAS' is hidden within 'easiest assignments'.

'needed' is the link.

(Other definitions for siestas that I've seen before include "Assets I hide during naps" , "Afternoon naps" .)

I've seen this clue in The Times.
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