諜ちょうす

Meanings

1

godan verb (-su)

spy on; investigate secretly

Rare, literary verb for spying or covert investigation. In modern Japanese, スパイする or 探る are more common.

敵てきの動うごきをちょうす。
Spy on the enemy's movements.

スパイする
Common modern loanword for spying; 諜す is a rare native Japanese verb with a literary feel.
探さぐる
Common verb for probing or investigating; 諜す implies more secretive, espionage-like activity.

Etymology

The kanji 諜 means 'spy' or 'secret agent'. The verb 諜す is a rare native Japanese verb derived from this kanji, but its exact historical derivation is uncertain.