Synonym: alas, regrettably, unluckily. Similar words: fortunately, importune, opportunity, fortune cookie, lately, privately, desperately, ultimately. Meaning: [ʌnˈfɔːtʃənətli] 
adv. by bad luck.
adv. by bad luck. 241. Unfortunately, the weapon mopping up after the Cold War is very lethal, costs a few hundred bucks and is everywhere.
242. However, the Government unfortunately failed to bring the people together.
243. Unfortunately for him, Alfred had been well trained and Bastide staggered back, clutching a bloody nose.
More similar words: fortunately, importune, opportunity, fortune cookie, lately, privately, desperately, ultimately, accurately, deliberately, approximately, unfold, definitely, unabated, satellite, donate, Senate, innate, resonate, dominate, originate, obstinate, laminated, eliminate, illuminate, coordinate, contaminate, nation-state, affectionate, decaffeinated.