[late 16C–19C] a general excl. of irritation, disbelief, dismissal; usu. as rot it! rot ’em! rot on!
[1950s–60s] a dismissive retort; a euph. for go to hell! under hell n.
[late 17C; mid-19C–1900s] a general excl. of derision, dismissal, synon. with ‘to hell with you!’.