In a cranky, irritable, or bad-tempered manner.
From cranky + -ily (adverb suffix that converts adjectives to adverbs). Transforms the adjective describing a state into an adverb describing how an action is performed.
People speak crankily in higher pitches and with shorter sentences—your voice actually changes in measurable ways when irritated, which is why people can tell you're grumpy through phone calls even without seeing you.
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