Lazy is defined as feeling like resting instead of working or moving around.(adjective)
An example of lazy is a cat in the sun.
The definition of lazy is slow or sluggish behavior.(adjective)
See lazy in Webster's New World College Dictionary
Origin: Early ModE, prob. < MLowG or MDu, as in MLowG lasich, slack, loose < IE les-, slack, tired, akin to base *lēi-: see late
See lazy in American Heritage Dictionary 4
adjective la·zi·er, la·zi·est
Origin: Probably of Low German origin.
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