ナイフnaifu

1. nounknife
   すみません、ナイフを落おとしてしまいました。↗

   I'm sorry, I dropped my knife.

• Synonym小刀こがたなNeutralA small knife, e.g. for sharpening pencils; also the short sword a samurai wore. In everyday speech 「ナイフ」 is the usual word.
• Related包丁ほうちょうNeutralA kitchen knife, classified by task — Japanese and Western styles both count; 「ナイフ」 usually means a table or folding knife, the general handled blade.
• Related出刃でばCasualColloquial short form of 「出刃包丁」: the thick-spined knife for dressing fish, heard mostly in the kitchen.
• Related短刀たんとうWrittenA short sword or blade, mostly for weapons and historical topics; not for table knives or cutting tools.
• Related出刃包丁でばぼうちょうNeutralA Japanese kitchen knife with a thick spine and pointed tip, used mainly to dress fish, also for poultry.
• Related匕首あいくちWrittenA dagger with no hand guard, met mostly in writing and period dramas; 「ナイフ」 is the everyday Western knife.
• RelatedどすCasualSlang for a short blade used in attacks; also a menacing voice, as in 「ドスの利いた声」.

Default to 「ナイフ」 for Western-style knives. Use 「包丁」 for kitchen knives, 「出刃包丁」 or 「出刃」 for the fish knife, 「短刀」 and 「匕首」 (written) for weapon blades, 「どす」 (slang) for a blade used in attacks, 「小刀」 for small knives.

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

1. 物ものを切きるための、柄がらのついた刃物はもの。