Most likely to let the dishes pile up

• Least likely to work
• Least inclined to do anything
• Like the most summery day
• Most indolent
• Most slothful

Wiktionary Word definitions in Wiktionary
a. (en-superlativelazy)

WordNet Word definitions in WordNet
adj. moving slowly and gently; "up a lazy river"; "lazy white clouds"; "at a lazy pace" disinclined to work or exertion; "faineant kings under whose rule the country languished"; "an indolent hanger-on"; "too lazy to wash the dishes"; "shiftless idle youth"; ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Lazy \La"zy\, a. [Compar. Lazier ; superl. Laziest .] [OE. lasie, laesic, of uncertain origin; cf. F. las tired, L. lassus, akin to E. late; or cf. LG. losig, lesig.] Disinclined to action or exertion; averse to labor; idle; shirking work. --Bacon. Inactive; ...