zadovoljavati

1. (of conditions, needs) to meet; to satisfy; to fulfil
   Kandidat ne zadovoljava sve uslove konkursa. — The candidate doesn't meet all the requirements.
   Ova plata jedva zadovoljava osnovne potrebe. — This salary barely covers basic needs.
2. (of a person) to satisfy; to please
   Teško je stalno zadovoljavati sve mušterije. — It's hard to keep every customer satisfied.
3. (without an object) to be satisfactory; to be up to standard
   Kvalitet usluge u tom hotelu ne zadovoljava. — The service in that hotel isn't up to standard.
4. (zadovoljavati se + instr.) to be content with; to settle for
   Ne zadovoljava se malim, uvek hoće više. — He never settles for little, he always wants more.

The perfective is zadovoljiti; “to be content with” is zadovoljavati se + instrumental.