The best replacement for duvet is coverlet.

The best alternatives to duvet are rated as following:
★★★★★  coverlet
★★★★★  duvet cover
★★★★  comforter
★★★★  quilt
★★  down comforter
★★  bedspread
★  comforter difference
★  down
★  doona
★  comforter cover
★  blanket
★  blankets
★  sleeping bag
  comforters
  featherbed
  sham
  sheets
  shams
  down duvet
  comforter which is better
  feather duvet
  goose duvet
  cal king duvet

Your alternative for duvet is not listed? Suggest!
Speaking about duvet, one probably shouldn't forget about cover.

Other search terms related to duvet and their ratings are:
★★★★★ cover
★★ comforter
★★ cotton cover
★ top sheet
You have in mind a companion for duvet and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of duvet in all years. Click on graph for more.
duvet
coverlet
duvet cover