IPA: /ˈrɛstləs/
KK: /ˈrɛstləs/
Not able to relax or stay still; feeling uneasy or agitated.
The restless child couldn't sit still during the movie.
Restless → It is formed from "rest" (from Old French *rest*, meaning to cease work or activity) and "-less" (meaning without). The word "restless" describes a state of being without rest or unable to relax.
Think of being 'without' ('-less') the ability to 'rest' — that's why restless means unable to find peace or calm.