cuss /kʌs/ BrE AmE verb [intransitive and transitive] British English old-fashioned American English spoken
[ Date: 1800-1900 ; Origin: curse ]
to swear because you are annoyed by something
cuss somebody ↔ out phrasal verb American English spoken
to swear and shout at someone because you are angry:
She got mad and started cussing him out.