— roisterer , n. — roisterous , adj. — roisterously , adv.
/roy"steuhr/ , v.i.
1. to act in a swaggering, boisterous, or uproarious manner.
2. to revel noisily or without restraint.
[ 1545-55; v. use of roister (n.) ru ( i ) stre ruffian, boor, var. of ru ( i ) ste RUSTIC ]