trifler (n.)
- amateur
- bungler
- dabbler
- dallier
- dawdler
- dilettante
- dillydallier
- do-nothing
- dodger
- faineant
- flirt
- goldbrick
- goof-off
- idler
- laggard
- lingerer
- loafer
- loiterer
- lotus-eater
- lounger
- lubber
- malingerer
- mope
- neglecter
- potterer
- procrastinator
- putterer
- sciolist
- shirker
- slacker
- slouch
- sloucher
- sloven
- slug
- sluggard
- slut
- stick-in-the-mud