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certificate Etymology Atlas
An official document that proves a fact, such as a qualification or an event., An official document showing that you own something or are owed money. Pro
Word
Root
Affix
Tap any word to open its Atlas. Pinch to zoom, drag to pan.
certificate is a Level B2 word — Pro only
Pro unlocks the Etymology Atlas for levels A2–C2 — plus FSRS-5 spaced repetition, mastery tracking, and the activity dashboard.