narásti naráščati to increase; to be on the increase; to grow; to go up; (voda) to rise
cene (reke) naraščajo prices (rivers) are rising
reka je narasla the river has risen (ali is swollen)
potok je narasel zaradi deževja rains have swollen the brook
vročina je zelo narasla medicina the temperature has risen sharply (ali considerably)