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Most common first
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JLPT level (easy → hard)
Random
Word family of 捜査
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任意捜査
にんいそうさ
Nouns
voluntary investigation; consensual search
公開捜査
こうかいそうさ
Nouns
open criminal investigation
共同捜査
きょうどうそうさ
Nouns
joint investigation
刑事捜査
けいじそうさ
Nouns
criminal investigation
初動捜査
しょどうそうさ
Nouns
initial investigation (by police)
地取り捜査
じどりそうさ
Nouns
neighborhood investigation; door-to-door inquiry near a crime scene
家宅捜査
かたくそうさ
Nouns
house search; search of premises
強制捜査
きょうせいそうさ
Nouns
compulsory investigation; compulsory search
おとり捜査
おとりそうさ
Nouns
sting operation; undercover investigation
捜査主任
そうさしゅにん
Nouns
chief investigator; head of the investigation; lead investigator
捜査令状
そうされいじょう
Nouns
search warrant
捜査員
そうさいん
Nouns
investigator; detective
捜査官
そうさかん
Common word
Nouns
police investigator; investigating officer
捜査当局
そうさとうきょく
Nouns
investigating authorities; law enforcement authority
捜査本部
そうさほんぶ
Nouns
investigation headquarters
捜査権
そうさけん
Nouns
right to investigate; investigatory power
捜査網
そうさもう
Nouns
police dragnet; investigation network
捜査線
そうさせん
Nouns
criminal investigation; investigative net
捜査課
そうさか
Nouns
criminal investigation department; CID; criminal investigation section
捜査陣
そうさじん
Nouns
criminal investigation squad; investigation team
機動捜査隊
きどうそうさたい
Nouns
mobile investigation unit (police); MIU
泳がせ捜査
およがせそうさ
Nouns
controlled delivery; arm's-length surveillance
犯罪捜査
はんざいそうさ
Nouns
criminal investigation
科学捜査
かがくそうさ
Nouns
scientific crime detection; forensic investigation
聞き込み捜査
ききこみそうさ
Nouns
police legwork; canvassing; house-to-house inquiry
裏付け捜査
うらづけそうさ
Nouns
corroborative investigation; search for supporting evidence
警察捜査
けいさつそうさ
Nouns
police investigation
