routously
/ˈraʊtəsli/Law. Now rare
adverb
In a disorderly or tumultuous manner; (later also) in such a manner as to form a rout.
- Usually in collocation with riotously; in later use chiefly as part of a formulaic legal expression relating to the formation of illegal assemblies..
Origin
Early 17th century. From routous + -ly.