luck ‧ less /ˈlʌkləs/ BrE AmE adjective literary
[ Word Family: adjective : ↑ lucky ≠ ↑ unlucky , ↑ luckless ; noun : ↑ luck ; adverb : ↑ luckily ≠ ↑ unluckily ]
having no luck in something you are trying to do SYN unfortunate :
He died in the desert like so many other luckless explorers.