1) Do what Jell-O does 2) Jerk around 3) Joggle 4) Move to and fro 5) Move with quick jerks 6) Shake 7) Shake a bit 8) Shaking 9) Slightly bounce 10) To rattle or wiggle 11) To shake something gently 12) To shake, rattle, or wiggle Found on https://www.crosswordclues.com/clue/jiggle
Jig'gle intransitive verb [ Freq. of jig .] To wriggle or frisk about; to move awkwardly; to shake up and down. Found on http://www.encyclo.co.uk/webster/J/9