英语词源字典 - 在线词源网站

craft (v.)[craft 词源字典]: Old English cræftan "to exercise a craft, build," from the same source as craft (n.). Meaning "to make skilfully" is from early 15c., obsolete from 16c., but revived c. 1950s, largely in U.S. advertising and commercial senses. Related: Crafted; crafting.[craft etymology, craft origin, 英语词源]
subtle (adj.): c. 1300 (mid-13c. as a surname), sotil, "penetrating; ingenious; refined" (of the mind); "sophisticated, intricate, abstruse" (of arguments), from Old French sotil, soutil, subtil "adept, adroit; cunning, wise; detailed; well-crafted" (12c., Modern French subtil), from Latin subtilis "fine, thin, delicate, finely woven;" figuratively "precise, exact, accurate," in taste or judgment, "fine, keen," of style, "plain, simple, direct," from sub "under" (see sub-) + -tilis, from tela "web, net, warp of a fabric" (see texture (n.)).

From early 14c. in reference to things, "of thin consistency;" in reference to craftsmen, "cunning, skilled, clever;" Depreciative sense "insidious, treacherously cunning; deceitful" is from mid-14c. Material senses of "not dense or viscous, light; pure; delicate, thin, slender; fine, consisting of small particles" are from late 14c. sotil wares were goods sold in powdered form or finely ground. Partially re-Latinized in spelling, and also by confusion with subtile.