Where does “кануть в лету” come from?

кануть в лету (Russian) comes from Russian ка́нуть, from Proto-Slavic kapnǫti — to drip, to drop.

кануть в лету (Russian): to fall into oblivion

Definitions

  1. to fall into oblivion

Ancestry of “кануть в лету”, step by step

StepLanguageWordMeaning
1Russianка́нутьto fall, to sink
2Proto-Slavickapnǫtito drip, to drop
Every word from Proto-Slavic kapnǫti →Every word from Russian ка́нуть →
кануть в лету — Etymology, Origin & Word History | Etymology Explorer