Moving with small, twisting motions from side to side; not straight or still.
From the verb 'wiggle,' which may derive from Middle Dutch or Low German origins. The suffix '-y' was added to create an adjective, making it a common informal way to describe something with wiggling qualities.
Wiggly is a word that sounds exactly like what it means—it's one of the most onomatopoetic descriptors in English, and children naturally use it before they ever learn the word 'undulate.' The mouth movements required to say it almost force you to wiggle your own face.
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