His car, a lightly used Lincoln, was riddled with bullet holes.
And it often travels so lightly that you can forget you are clothed in its benefits.
No conceivable Egyptian government will lightly rip up the peace treaty Sadat signed with Begin.
Old English leohtlice "so as not to be heavy" (of material things, but also of sleep, blows, etc.); cognate with Old Frisian lichtelik, Old High German lihtlihho, German leichtlich, Old Norse lettlega (see light (adj.1)). Meaning "frivolously, indifferently" is from early 13c.