IPA: /ˈhæpɪnəs/
KK: /ˈhæpɪnəs/
A feeling of joy and contentment, often associated with positive experiences or circumstances.
Her face lit up with happiness when she received the good news.
Happiness → It is formed from "happy" (from Middle English *hap*, meaning chance or luck) and the suffix "-ness" (meaning the state of being). The word "happiness" refers to the state of being happy or fortunate.
Think of 'hap' meaning chance or luck, and remember that 'happiness' is the state of being fortunate or feeling good.