How to say "door-to-door" in Japanese

• 戸別こべつCommon
  no-adjectiveCovers the 'house-to-house, each house' sense of door-to-door, as in visiting or delivering to individual homes. A common word, it is the natural choice for this meaning.
• ドアツードア
  nounA loanword covering the basic 'door-to-door' sense, such as selling or canvassing from house to house. Less common than 戸別, so it is seldom the word you want.
• ドブ板どぶいた
  prenominal modifierReally means 'grassroots' or 'on the ground' campaigning; 'door-to-door' is only a secondary gloss. Use it for door-to-door electioneering, not for deliveries or visits.

Use 戸別 for the general 'house-to-house' sense of visits or deliveries, 「ドアツードア」 as a direct loanword for the same idea, and 「ドブ板」 mainly for grassroots, door-to-door campaigning.

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

• 戸別こべつhouse-to-house
• ドアツードアdoor-to-door
• ドブ板どぶいたgrassroots (e.g. campaign)