We don't have synonyms for duvets yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are duvet and duets.
(n) :
(British, Ireland, New Zealand, Canada) A quilt or usually flat cloth bag with a filling (traditionally down) and usually an additional washable cover, used instead of blankets; often called a comforter or quilt, especially in US English.
(n) :
(British, Ireland, New Zealand, Canada) A quilt or usually flat cloth bag with a filling (traditionally down) and usually an additional washable cover, used instead of blankets; often called a comforter or quilt, especially in US English.