WordNet sense 1 (inclined to waste time and lag behind):

laggard

WordNet sense 2 (not punctual; after the appointed time):

unpunctual

WordNet sense 3 (wasting time):

pokey, poky

WordNet sense 4 (not moving quickly; taking a comparatively long time):

slow

WordNet sense 5 (using cautious slow strategy to wear down opposition; avoiding direct confrontation):

fabian

WordNet sense 6 (showing careful forethought):

cautious