adverb noticeably, greatly, clearly, obviously, seriously (informal), signally, patently, notably, considerably, remarkably, evidently, manifestly, distinctly, decidedly, strikingly, conspicuously, to a great extent, outstandingly The quality of their relationship improved markedly.

Is markedly an adverb?

The adverb markedly comes from marked and its sense of "having a mark," from the Old English mearc, "sign or mark."

What is markedly different?

In a marked manner; distinctly, noticeably, conspicuously. Being markedly different as a teenager can get you taunted, as an adult it can make you famous.