source: “Boys are Icky!” (Darling in the FRANXX Episode 8 Review) – It's An Anime Thing

the action or crime of stealing:

盗み, 窃盗(罪); C «…を» 盗むこと «of» , 窃盗行為

e.g. he was convicted of theft

e.g. the latest theft happened at a garage.

Old English thīefth, thēofth, of Germanic origin; related to thief.