contemptuously vs contumeliously

contemptuously and contumeliously both are adverbs.

Word	Noun	Adjective	Verb	Adverb
contemptuously	No	No	No	Yes
contumeliously	No	No	No	Yes

As adverbs, contemptuously and contumeliously are synonyms defined as:

contemptuously and contumeliously: without respect; in a disdainful manner

Other synonyms of contemptuously include disdainfully, scornfully.

contemptuously (adverb)	contumeliously (adverb)
without respect; in a disdainful manner	without respect; in a disdainful manner