out·swear
| \ ˌau̇t-ˈswer
\
outswore\ ˌau̇t-ˈswȯr
\;
outsworn\ ˌau̇t-ˈswȯrn
\;
outswearing
transitive verb
: to outdo or surpass in swearing : to use profane or obscene language more than
[General George S.] Patton, who could outswear a mule skinner, swore at all times as if he were in a stag poker game.— Stephen E. Ambrose