jumpy (adj.)
- agitated
- anxious
- bashful
- bustling
- convulsive
- cowardly
- diffident
- discomposed
- disquieted
- disturbed
- edgy
- excited
- fearful
- fearing
- fearsome
- feverish
- fidgety
- fitful
- flurried
- flustered
- fretful
- fussy
- goosey
- goosy
- high-strung
- jerking
- jerky
- jittery
- mousy
- nervous
- nervy
- panicky
- perturbed
- queasy
- restive
- restless
- ruffled
- scary
- shaken
- shaking
- shaky
- shivering
- shivery
- shrinking
- shy
- skittish
- spasmodic
- spastic
- spooky
- tense
- timid
- timorous
- trembling
- tremulous
- trigger-happy
- troubled
- troublous
- turbulent
- uneasy
- unpeaceful
- unquiet
- unsettled
- upset