- kaisaku excavation, cutting, digging
Technical term for civil engineering and construction, especially tunnels and canals; rare in everyday conversation.
新しいトンネルの開削工事が始まった。
Atarashii tonneru no kaisaku kōji ga hajimatta.
The excavation work for the new tunnel has begun.
運河の開削には多くの人手が必要だ。
Unga no kaisaku ni wa ōku no hitode ga hitsuyō da.
Digging the canal requires a lot of manpower.
⚖️ Not to be confused with 開拓 (kaitaku), which means land development or cultivation, not digging.
Press the microphone and say: 開削
Ready to listen
💡 Use は or が to mark this word as the topic or subject of a sentence.
Found in a wide range of contexts. Useful for building reading and listening fluency.
Save personal notes for every word you study — memory hooks, your own sentences, grammar tips, and personal stories.
Synced to your account · Anki export · Accessible on every device
Create Free AccountReview Premium options
Create a free account to sync your level, streaks, and progress across all devices.
Already a member? Sign in →
Sign in or create a free account to keep your history.
Reset mastery for this word?
Review scheduling updates after each session.
Based on JLPT level, kanji complexity & word length.