Kindly
Old English: adverb from gecyndelīce ‘naturally, characteristically’ (see kind2, -ly2); adjective from gecyndelīc ‘natural’ (see kind1, -ly1).
wiktionary
From Middle English kyndely, kyndeliche, from Old English cyndelīċ(“natural, kindly”); equivalent to kind + -ly.
From Middle English kyndly, kyndely, kyndeliche, kundeliche, from Old English ġecyndelīċe, equivalent to kind + -ly.
etymonline
kindly (adj.)
c. 1200, cundelich, "natural, right, lawful," from Old English gecyndelic "natural, innate; in accordance with the laws or processes of nature, suitable, lawful" (of birth, etc.); see kind (adj.) + -ly (1). From late 14c. as "pleasant, agreeable;" from 1560s as "full of loving courtesy." Related: Kindliness. The Old English word also meant "pertaining to generation," hence cyndlim "womb," in plural "genitalia," literally "kind-limb."
kindly (adv.)
c. 1200, cundeliche, "natively, congenitally; according to nature," from Old English gecyndelice "naturally;" see kind (adj.) -ly (2). From mid-13c. as "pleasantly, gladly, with kind feelings, in a kind manner." Also in Middle English, "by birth or descent; in the approved manner, properly" (late 14c.).
