Etymology

res ipsa loquitur

Today it means: The import of a thing or situation is obvious. Full definition →

Latin rēs ipsa loquitur
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The story

  1. Latin · borrowed fromrēs ipsa loquitur“the thing speaks for itself”
  2. English todayres ipsa loquitur

Unadapted borrowing from Latin rēs ipsa loquitur (“the thing speaks for itself”, literally “the thing itself speaks”).

Etymology from Wiktionary, CC BY-SA 4.0.