punchy (adj.1)youdaoicibaDictYouDict[punchy 词源字典]
"nervously anxious; irritable from fatigue," 1937, from punch (v.) + -y (2). Perhaps originally a shortening of punch-drunk. Related: Punchily; punchiness.[punchy etymology, punchy origin, 英语词源]
punchy (adj.2)youdaoicibaDictYouDict
"full of vigor," 1926, from punch (n.3) + -y (2). Related: Punchily; punchiness.