The oppoiste of lucky is unlucky.
1. What is the opposite of luck?
Is it unluck or bad/ill luck? Don't you use 'unluck'?
2. What about luck or luckiliss? Are both okay?
2 answers
Luckiless is not a word. Bad or ill luck means the same as unlucky.
To be clearer, luckless is a word (nor luckiless). It means the same as unlucky.