How to say "mattress" in Japanese

• マットレスCommon
  nounThe common word for the mattress of a bed; it also covers the mattress pad laid under a futon. This is the word you want in almost any context.
• 褥しとね
  nounA less common word whose main senses are cushion and pillow; for an actual mattress it is seldom the word you want, and マットレス is the natural choice.

For a bed mattress, or the pad laid under a futon, use 「マットレス」; 褥 is a less common word whose main senses are cushion and pillow, so it is seldom the mattress word you want.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• マットレスmattress
• 褥しとねcushion
• 敷き布団しきぶとんfuton (laid on the floor)