切り口・切口・截り口|きりくちkirikuchi[2]nakadaka (mid-high)

1. nouncut end; section; opening; slit
2. nounpoint of view; (different) perspective; new approach

• Synonym切れ口きれくちNeutralRefers only to the cut end or slit itself — where something has come apart. Rarer than 「切り口」, and with none of its figurative 'angle of analysis' sense.
• Related切り込みきりこみNeutralA notch or opening made by cutting into something, not the resulting cross-section. Also means a raid or attack, as in 「切り込み隊長」.

Use 「切り口」 for a cut cross-section or a fresh angle on a problem, as in 「新しい切り口」「切り口を変える」. For an opening cut into something, use 「切り込み」; for a place where something is severed, use 「切れ口」.

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

1. 物ものを切きった断面だんめん。
2. （創口そうこう）切り傷きりきずの口くち。
3. 袋ふくろなどで、そこから切きり始はじめるように指示しじした目印めじるし。
4. 物事ものごとを分析ぶんせきする際さいの観点かんてん・方法ほうほう。