1. Godan verb with 'ru' ending, Transitive verb

   to shake; to jolt; to rock; to swing; to sway

   地震が突然、建物をゆさぶった。

2. to shake (e.g. the political world); to disturb; to shock; to upset

3. to put off a batter (by varying one's type of pitch)

   Baseball

Also written 揺さ振る【ゆさぶる】yusaburu