jittery vs overstrung

jittery and overstrung both are adjectives.

Word	Noun	Adjective	Verb	Adverb
jittery	No	Yes	No	No
overstrung	No	Yes	No	No

As adjectives, jittery and overstrung are synonyms defined as:

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

jittery (adjective)	overstrung (adjective)
characterized by jerky movements	too tightly strung
being in a tense state	being in a tense state