keep on doing; all the way through; non-stop
Attaches to the -masu stem of a verb to express doing something continuously, all the way, or without stopping. Often used in compound verbs like 歩き通す (walk all the way) or 働き通す (work non-stop).
See also: 通し (とおし)
He worked non-stop all night.
I walked all the way to the station and got tired.
soaking fabric in lukewarm water; desizing; moistening with steam · blanching; parboiling
cutting; road cut through a hill; railway cut
glancing through; looking over; skimming
transparent; plain (glass or glasses)
Derived from the verb 通す (とおす, 'to let pass through; to persist'), with rendaku voicing to どおし when used as a suffix.