From Middle English souple, from Old French souple, soupple (“soft, lithe, yielding”), from Latin supplic-, supplex (“suppliant, submissive, kneeling”), of uncertain formation. Either from sub + plicō (“bend”) (compare complex), or from sub + plācō (“placate”). More at sub-, placate.
- To make or become supple.
- The stones […] suppled into softness as they fell.
- second-person singular present active imperative of suppleō