deformalize

[ dee-fawr-muh-lahyz ]
/ diˈfɔr məˌlaɪz /

verb (used with object), de·for·mal·ized, de·for·mal·iz·ing.

to make less formal; reduce the strictness, preciseness, etc., of.
Also especially British, de·for·mal·ise.

Origin of deformalize

First recorded in 1875–80; de- + formalize

OTHER WORDS FROM deformalize

de·for·mal·i·za·tion, noun