nervy

adjective, nerv·i·er, nerv·i·est.

1. brashly presumptuous or insolent; pushy: a nervy thing to say; a nervy trick to pull.
2. having or showing courage; brave or bold: the nervy feats of the mountaineers.
3. strong; sinewy; vigorous: a hard, nervy physique.
4. Chiefly British. straining one’s patience or forbearance; trying.
5. nervous; excitable; on edge.

adjective nervier or nerviest

1. British informal tense or apprehensive
2. having or needing bravery or endurance
3. US and Canadian informal brash or cheeky
4. archaic muscular; sinewy

adj.“full of courage,” 1870, from nerve + -y (2). Sense of “excitable” is from 1891.