'Procrastinator' definitions:

Definition of 'procrastinator'

(from WordNet)
noun
Someone who postpones work (especially out of laziness or habitual carelessness) [syn: procrastinator, postponer, cunctator]

Definition of 'Procrastinator'

From: GCIDE
  • Procrastinator \Pro*cras"ti*na`tor\, n. One who procrastinates, or defers the performance of anything. [1913 Webster]

Synonyms of 'procrastinator'

From: Moby Thesaurus