To move with a smooth, wavelike motion, rising and falling in gentle curves like water flowing over stones or wheat swaying in wind. It's movement that breathes, that flows, that dances with natural rhythm.
From Latin 'undulatus,' meaning wavy, derived from 'unda' (wave). The word rode the waves from ancient Rome through medieval scholarly texts into modern English, always carrying the image of water's eternal dance. It entered English in the 17th century when scientists needed precise language to describe the wave-like patterns they observed in nature.
This word is pure liquid poetry! When you say UN-du-late, your voice actually rises and falls like a wave — the word performs what it means! I'm fascinated that it comes from the Latin word for wave, because humans have been mesmerized by that flowing, rhythmic motion since forever. Think about it — dancers undulate, snakes undulate, sand dunes undulate, even music can undulate through different moods and tempos. It's everywhere in nature, this gorgeous wavelike movement, and we have this one perfect word to capture it all. Every time you see anything moving in that smooth, flowing way, you're watching the universe undulate!
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