iscrpljivati

1. (of a person) to exhaust; to wear out
   Ovaj posao me potpuno iscrpljuje. — This job completely wears me out.
   Vrućina iscrpljuje i ljude i životinje. — The heat exhausts both people and animals.
2. (of resources) to deplete; to drain
   Rudnici godinama iscrpljuju prirodne resurse. — The mines have been depleting natural resources for years.
3. (iscrpljivati se) to wear oneself out
   Nemoj se iscrpljivati, odmori malo. — Don't wear yourself out, take a little rest.

The perfective is iscrpiti (also iscrpsti).