Etymology

ceremonious

ce·re
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Today it means: According to the required or usual ceremonies, formalities, or rituals; specifically (Christianity, obsolete), to ceremonial laws in the Bible. Full definition →

Middle French cérémonieux ← Latin caerimōniōsus ← Proto-Indo-European *kʷer-
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The story

  1. Proto-Indo-European · derived from*kʷer-“to build, make; to do”
  2. Latin · derived fromcaerimōnia“awe, reverence, veneration; sacredness, sanctity; religious ceremony, ritual”
  3. Latin · learned borrowing fromcaerimōniōsus
  4. Middle French · learned borrowing fromcérémonieux
  5. English todayceremonious

Learned borrowing from Middle French cérémonieux (modern French cérémonieux) or directly from its etymon Latin caerimōniōsus + English -ous (suffix forming adjectives from nouns, denoting the presence of a quality in any degree (typically an abundance)). Caerimōniōsus is derived from Latin caerimōnia (“awe, reverence, veneration; sacredness, sanctity; religious ceremony, ritual”) (possibly ultimately from Proto-Indo-European *kʷer- (“to build, make; to do”)) + -ōsus (suffix meaning ‘full of, overly’ forming adjectives from nouns). By surface analysis, ceremony + -ous.

Words from the same roots

Latincaerimōnia all →

ceremony

Proto-Indo-European*kʷer- all →

paris

Etymology from Wiktionary, CC BY-SA 4.0.