Definition of sleep or rest easy in English:

sleep (or rest) easy

Go to sleep without (or be untroubled by) worries: this insurance policy will let you rest easy
More example sentences
  • A Ladbrokes spokesman said: ‘It looks like all the bookies will be sleeping easy in their beds on Christmas morning.’
  • That's not my fight, and I'll sleep easy tonight knowing that I've answered the call of duty with an extra topping of usefulness.
  • How this person can sleep easy at night is beyond me.
See parent entry: easy

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Word of the day retroflex
Pronunciation: ˈrɛtrə(ʊ)flɛks
adjective
turned backwards