Noun: trifler trI-f(u-)lu(r)
- One who behaves lightly or not seriously
"The trifler's jokes were inappropriate for the solemn occasion"
Derived forms: triflers
Type of: bum [N. Amer, informal], deadbeat [informal], do-nothing [informal], idler, layabout [informal], loafer, shirker [informal], slacker [informal]