quotidian (adj) - daily or happening every day; commonplace, mundane, or everyday
BREAKDOWN: QUO- (commonplace) + DI- (day) + -IAN (of or pertaining to)
“One of the things that frequently gets lost in descriptions of depression is that the depressed person often knows that it is a ludicrous condition to feel so disabled by the ordinary business of quotidian life.” —Andrew Solomon
Love this word!
It's especially interesting to me because the Portuguese version, 'cotidiano', is pretty common, whereas in English, it's a five-dollar word.