英语词源字典 - 在线词源网站

fiddle (v.)[fiddle 词源字典]: late 14c., "play upon a fiddle," from fiddle (n.); the figurative sense of "to act nervously, make idle movements, move the hands or something held in them in an idle, ineffective way" is from 1520s. Related: Fiddled; fiddling.[fiddle etymology, fiddle origin, 英语词源]
nervous (adj.): c. 1400, "affecting the sinews," from Latin nervosus "sinewy, vigorous," from nervus "sinew, nerve" (see nerve). Meaning "of or belonging to the nerves" in the modern sense is from 1660s. Meaning "suffering disorder of the nervous system" is from 1734; illogical sense "restless, agitated, lacking nerve" is 1740. Widespread popular use as a euphemism for mental forced the medical community to coin neurological to replace it in the older sense. Nervous wreck first attested 1862. Related: Nervously; nervousness.
punchy (adj.1): "nervously anxious; irritable from fatigue," 1937, from punch (v.) + -y (2). Perhaps originally a shortening of punch-drunk. Related: Punchily; punchiness.