How to say "threshold" in Japanese

• 敷居しきいCommon
  nounThe physical threshold of a doorway, especially one with grooves for sliding doors; it also means a sill. Use it for the actual structure in a building, not for amounts or levels.
  もう二に度どとこの家いえの敷居しきいはまたがない。↗

  I'll never set foot in this house again.
• 閾値いきちCommon
  nounThe abstract sense: a level, amount, or dose at which something begins to occur or change. Use this for quantities and limits, not for the physical strip at a doorway.

Use 敷居 for the physical threshold of a doorway, especially one with grooves for sliding doors, and 閾値 for the abstract sense of a level, amount, or dose at which something begins to happen or change.

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

• 敷居しきいthreshold (esp. one with grooves for sliding doors)
• 閾値いきちthreshold (amount, dose, etc.)
• 閾いきthreshold
• 限界点げんかいてんthreshold
• 蹴放しけはなしthreshold (lacking the grooves needed for a sliding door)
• とば口とばくちentrance