Here's what rhymes with annoyingly.

Consider these alternatives

cliched / made comically / chronically irritatingly / unhesitatingly smug / drug excruciatingly / unhesitatingly cloying / employing verbose / those inoffensive / extensive frustratingly / rustratingly hilariously / variously endearing / feeling annoying / enjoying inane / main overused / used pathetically / theoretically trite / right