jittery vs high-strung

jittery and high-strung both are adjectives.

Word	Noun	Adjective	Verb	Adverb
jittery	No	Yes	No	No
high-strung	No	Yes	No	No

As adjectives, jittery and high-strung are synonyms defined as:

Other synonyms of jittery include edgy, highly strung, jumpy, nervy, overstrung, restive, uptight.

jittery (adjective)	high-strung (adjective)
characterized by jerky movements	being in a tense state
being in a tense state