spent

If you're spent, you are completely worn out or exhausted. Almost everyone feels completely spent after climbing a mountain or running a marathon.

When you're spent, you've used up your reserves of energy, and when a physical item is spent, it's outlived its usefulness. Spent fuel, for example, has been burned and can no longer power a machine, and a rocket might power a space shuttle until it's spent and falls away. The adjective spent comes from the verb spend, "to pay out," which has the Latin root expendere, "to pay down."

Definitions of spent
  1. adjective
    depleted of energy, force, or strength
    synonyms: exhausted
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    Antonyms:
    unexhausted
    not used up completely
    left, left over, leftover, odd, remaining, unexpended
    not used up
    unconsumed
    not consumed
    unexpended, unspent
    (of financial resources) not spent
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  2. adjective
    drained of energy or effectiveness; extremely tired; completely exhausted
    synonyms: dog-tired, exhausted, fagged, fatigued, played out, washed-out, worn out, worn-out
    tired
    depleted of strength or energy
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