povećavati

1. to increase; to raise
   Firma svake godine povećava plate. — The company raises salaries every year.
   Brza vožnja povećava rizik od nesreće. — Fast driving increases the risk of an accident.
2. (of an image) to magnify; to enlarge
   Ova lupa povećava slova tri puta. — This magnifying glass makes the letters three times bigger.
3. (povećavati se) to increase; to grow
   Broj turista u Beogradu se stalno povećava. — The number of tourists in Belgrade keeps growing.

The perfective is povećati.