fai·né·ant 
(fā′nā-äɴ)
(fā′nā-äɴ)adj.
Given to doing nothing; lazy.
n.
One who is lazy or idle.
[French, alteration (influenced by fait néant, does nothing) of Old French faignant, idler, from present participle of faindre, feindre, to feign; see FEIGN.]