frighten - drive out by frightening

move, displace - cause to move, both in a concrete and in an abstract sense; "Move those boxes into the corner, please"; "I'm moving my money to another bank"; "The director moved more responsibilities onto his new assistant"

fire - drive out or away by or as if by fire; "The soldiers were fired"; "Surrender fires the cold skepticism"

clear the air - dispel differences or negative emotions; "The group called a meeting to finally clear the air"

banish - drive away; "banish bad thoughts"; "banish gloom"

shoo, shoo away, shoo off - drive away by crying `shoo!'

drive out, rouse, rout out, force out - force or drive out; "The police routed them out of bed at 2 A.M."