spent

/spɛnt/

/spɛnt/

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
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