Jumpy (4)
'jumpy' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for on edge that I've seen before include "Highly strung" , "Fidgety, nervous" , "Cliff-top walker may be" , "Tense and irritable, very nervous" , "Nervous and tense - close to cliff?" .)
'jumpy' is the definition.
(synonyms)
This is all the clue.
(Other definitions for edgy that I've seen before include "Uneasy" , "Overstrung" , "Visibly nervous" , "In a tense state" , "Jittery" .)
'jumpy' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for twitchy that I've seen before include "Showing signs of nervousness" , "Jerky" , "Agitated" , "in a stew" , "Nervous" .)