As adjectives the difference between unfortunate and unforeseen
is that unfortunate is not favored by fortune while unforeseen is not foreseen.
As a noun unfortunate
is an unlucky person.
unfortunate
English
Adjective
(
en adjective)
not favored by fortune
marked or accompanied by or resulting in misfortune
Synonyms
* (not favored by fortune) unsuccessful
* (accompanied by or resulting in misfortune) unlucky
Antonyms
* (not favored by fortune) fortunate
* (accompanied by or resulting in misfortune) fortunate, lucky
See also
* deplorable
* regrettable
* infelicitous
* unsuitable