Characterized by quick, restless movements; fidgety or frisky.
From 'flisk' plus '-y' (Old English 'ig'), an adjectival suffix that converts verbs or nouns into adjectives, as in 'risky' from 'risk'.
The '-y' suffix is incredibly productive in English—we can add it to almost any noun to make an adjective (water → watery, cloud → cloudy, risk → risky), which lets native speakers instantly create and understand new adjectives spontaneously.
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