Subscribe
late Middle English (in the sense ‘sign at the bottom of a document’): from Latin subscribere, from sub- ‘under’ + scribere ‘write’.
wiktionary
From Middle English subscriben, subskryben, from Latin subscrībere. Compare its native English equivalent underwrite.
etymonline
subscribe (v.)
early 15c., "to sign at the bottom of a document," from Latin subscribere "write, write underneath, sign one's name; register," also figuratively "assent, agree to, approve," from sub "underneath" (see sub-) + scribere "to write" (from PIE root *skribh- "to cut"). The meaning "give one's consent" (by subscribing one's name) first recorded mid-15c.; that of "contribute money to" 1630s; and that of "become a regular buyer of a publication" 1711, all originally literal. Related: Subscribed; subscribing.
