You use unluckily as a comment on something bad or unpleasant that happens to someone, in order to suggest sympathy for them or that it was not their fault.
Unluckily for him, the fraud officers were watching this flight too. [+ for]
Examples of 'unluckily' in a sentence
unluckily
He shivered at the thought of unluckily striking one, the animal's wide-eyed pain.
Thomas, Craig THE LAST RAVEN
Her son would recognize them, I suppose, but unluckily at the moment he's not available.