16 possible answers to
Answers with 3 characters: JAR Answers with 4 characters: JOLT RILE ROIL STIR Answers with 5 characters: ALARM ANNOY UPSET Answers with 6 characters: JOSTLE PESTER RANKLE RUFFLE BOTHER Answers with 7 characters: AGITATE SHAKEUP Answers with 8 characters: UNSETTLE