UNFORTUNATELY
unfortunately, unluckily, regrettably, alas
(adverb) by bad luck; “unfortunately it rained all day”; “alas, I cannot stay”
Source: WordNet® 3.1
Etymology
Adverb
unfortunately (comparative more unfortunately, superlative most unfortunately)
Happening through bad luck, or because of some unfortunate event.
Used (as a parenthetical word) to express disappointment, compassion, sorrow, regret or grief.
Synonyms
• (through bad luck): unluckily
• (parenthetical word): alas, regrettably, sadly, sad to say
Antonyms
• (through bad luck): fortunately, luckily
Source: Wiktionary
UNFORTUNATE
Un*for"tu*nate, a.
Definition: Not fortunate; unsuccessful; not prosperous; unlucky; attended
with misfortune; unhappy; as, an unfortunate adventure; an
unfortunate man; an unfortunate commander; unfortunate business.
– n.
Definition: An unfortunate person. Hood.
– Un*for"tu*nate*ly, adv.
– Un*for"tu*nate*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition