Use 'hedonistic' in informal conversations about lifestyle or personal choices. After winning the lottery, he embraced a hedonistic way of living.
Pro Tip 2/3
Not Always Negative
'Hedonistic' can have positive or negative connotations depending on context. Her hedonistic outlook made her the life of the party.
Pro Tip 3/3
Subjectivity
What's considered 'hedonistic' can vary greatly between different cultures. Eating dessert every night might be hedonistic to some, but normal to others.