Relating to or characterized by commotion; tending to cause disturbance or agitation.
From 'commotion' (from Latin 'commotio,' meaning agitation or disturbance) plus the suffix '-al' meaning 'of or relating to.' The root 'commovere' means to move together or agitate.
This word is rarely used because 'tumultuous' and 'chaotic' work better, but it's a perfect example of how English lets us add '-al' to almost any noun to create an adjective—even when nobody ends up using it!
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