rested

If you're rested, you're wide awake after a good night's sleep. Rested students tend to score better on tests than those who stayed up too late the night before.

If you were choosing the pilot to fly your airplane or the surgeon in charge of a relative's operation, you'd pick rested people, who are refreshed by plenty of sleep and are wide awake and prepared to do their jobs well. Someone who's rested is alert and invigorated, as opposed to a tired or fatigued person. The Old English root is ræste, "sleep, bed, or mental peace."

Definitions of rested
  1. adjective
    not tired; refreshed as by sleeping or relaxing
    “came back rested from her vacation”
    Synonyms:
    lively
    full of life and energy
    fresh, invigorated, refreshed, reinvigorated
    with restored energy
    untired, unwearied, unweary
    with unreduced energy
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    Antonyms:
    tired
    depleted of strength or energy
    all in, beat, bushed, dead
    very tired
    aweary, weary
    physically and mentally fatigued
    blear, blear-eyed, bleary, bleary-eyed
    tired to the point of exhaustion
    bored, world-weary
    tired of the world
    burned-out, burnt-out
    exhausted as a result of longtime stress
    careworn, drawn, haggard, raddled, worn
    showing the wearing effects of overwork or care or suffering
    drooping, flagging
    weak from exhaustion
    dog-tired, exhausted, fagged, fatigued, played out, spent, washed-out, worn out, worn-out
    drained of energy or effectiveness; extremely tired; completely exhausted
    footsore
    having sore or tired feet
    jaded, wearied
    exhausted
    drained, knackered
    very tired
    ragged
    worn out from stress or strain
    travel-worn
    tired by travel
    unrefreshed, unrested
    not rested or refreshed;
    whacked
    (British informal) exhausted or worn out
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