root word of "ceremeniously"?

Answer 1

Assuming you mean ceremoniously, the root is ceremony, which originally meant "sacred rite."

[Origin: 1350–1400; ME ceremonie < ML céremōnia, L caerimōnia sacred rite; r. ME cerymonye < MF cerimonie < L, as above]

http://dictionary.reference.com/search?q=ceremony

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Cheers,
Bruce

Answer 2

Ceremony