punchy (adj.1)

"nervously anxious; irritable from fatigue," 1937, from punch (v.) + -y (2). Perhaps originally a shortening of punch-drunk. Related: Punchily; punchiness.

punchy (adj.2)

"full of vigor," 1926, from punch (n.3) + -y (2). Related: Punchily; punchiness.

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