- lenient
- 1650s, "relaxing, soothing," from M.Fr. lenient, from L. lenientem (nom. leniens), prp. of lenire "to soften, alleviate, mitigate, allay, calm," from lenis "mild, gentle, calm," probably from PIE base *le(i)- "to leave, yield" (cf. Lith. lenas "quiet, tranquil, tame, slow," O.C.S. lena "lazy," L. lassus "faint, weary," O.E. læt "sluggish, slow," lætan "to leave behind"). Sense of "mild, merciful" (of persons) first recorded 1787. In earlier use was lenitive, attested from 1540s of medicines, 1610s of persons.