This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Having or feeling nervous unease: a jittery vigil in the dark.

adj. Marked by jittering movements: a jittery ride over rough terrain.

adj. nervy, jumpy, on edge

adj. being in a tense state; easily upset or frightened; -- of a person.

adj. characterized by jerky movements

adj. being in a tense state

"Gord stood nearby in jittery indecision — encouraged by hunger, restrained by fear."

tense   

edgy    fidgety    high-strung    in suspense(predicate)    jumpy    nervous    nervy    overstrung    restive    uneasy   

glittery   

edgy    jumpy    metronomic    twitchy    fidgety    pent-up    uptight    antsy    panicky    high-strung