english
1
general::
Phrase(s): on edge 1. Lit. on something’s own edge. • Can you stand a dime on edge? • You should store these crates on edge, not lying flat. 2. Fig. nervous. (As if one were balanced as in Q. See also on the edge.) • I have really been on edge lately. • Why are you so on edge?
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Tense, nervous, irritable, as in We were all on edge as we waited for the surgeon's report. This expression transfers the edge of a cutting instrument to one's feelings. [Late 1800s] Also see ON THE EDGE; SET ONE'S TEETH ON EDGE.
American Heritage Idioms