un ‧ for ‧ tu ‧ nate ‧ ly S1 W3 /ʌnˈfɔːtʃ ə nətli $ -ˈfɔːr-/ BrE AmE adverb [sentence adverb]
[ Word Family: noun : ↑ fortune , ↑ misfortune , ↑ unfortunate ; adverb : ↑ fortunately ≠ ↑ unfortunately ; adjective : ↑ fortunate ≠ ↑ unfortunate ]
used when you are mentioning a fact that you wish was not true:
Unfortunately, you were out when we called.