IPA: /ˈlʌkɪnəs/
KK: /ˈlʌkɪnəs/
The state or quality of having good fortune or favorable outcomes.
Her luckiness helped her win the lottery twice in a row.
Luckiness → It is formed from "luck" (from Middle Dutch *luc*, meaning fortune or chance) and "-iness" (a suffix meaning the state or quality of). The word "luckiness" refers to the state of being fortunate or having good luck.
Think of 'luck' as fortune and remember that 'luckiness' means the state of having good fortune.