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somnambulation

noun

Latin root: somnus Wiktionary

noun Definition from WordNet 3.1, Princeton University. More about somnambulation at Wordnik → Where our words come from →

  1. Walking by a person who is asleep.

Origin

From Latin somnus (“sleep”) + ambulatio (“a walking about”), from ambulare (“to walk”). See somnolent, amble.

From Wiktionary, via Kaikki.org (CC BY-SA)