support
v.
late 14c., "to aid," also "to hold up, prop up, put up with, tolerate," from Old French suporter "to bear, endure, sustain, support" (14c.), from Latin supportare "convey, carry, bring up, bring forward," from sub "up from under" (see sub-) + portare "to carry" (see port, n.1). Related: Supported; supporting.
n.
late 14c., "act of assistance, backing, help, aid," from support, v.. Meaning "that which supports, one who provides assistance, protection, backing, etc." is early 15c. Sense of "bearing of expense" is mid-15c. Physical sense of "that which supports" is from 1560s. Meaning "services which enable something to fulfil its function and remain in operation" (as in tech support) is from 1953.
〔李〕[sup-（sub-）=from under在下；port=to carry承担⇒“to carry from under在下面承担”→] v.①bear the weight of；hold up支撑
〔蒋〕[sup=sub-下，port拿，持;’由下支撑”→使不倒下”] 支撑，支持，支援
〔李〕[sup-(sub-)=under在下面；port=to carry or bear承担→“to bear from under在下面承担着”→] v.① carry the weigh of支撑