Etymology
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user (n.)
c. 1400, agent noun from use (v.). Of narcotics, from 1935; of computers, from 1967. User-friendly (1977) is said in some sources to have been coined by software designer Harlan Crowder as early as 1972.
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pothead (n.)
also pot-head "chronic marijuana user," 1967, from pot (n.2) + head (n.). Earlier it meant "stupid person" (1530s), from pot (n.1).
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netizen (n.)

"user of the internet," considered as part of the whole community of users, 1995, from net, short for internet + citizen.

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Serapis 

Roman name of an Egyptian god of the lower world, from Latin, from Greek Serapis, earlier Sarapis, from Egyptian User-hapi, literally "Osiris-Apis." Related: Serapic.

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thusly (adv.)
1865 (in an Artemus Ward dialect humor piece), from thus + -ly (2). A double adverb. Perhaps originally a humorous or mocking over-correction of thus; it has gained some currency but earns frowns for the user.
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disuse (v.)

c. 1400, disusen, "to misuse, pervert;" mid-15c., "become unaccustomed" (both senses now obsolete), from or on analogy of Old French desuser, from des- "not" (see dis-) + user "use" (see use (v.)). Meaning "cease to use, neglect to employ" is from late 15c.

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usable (adj.)
late 14c., from Old French usable "available, in use" (14c.), from user (see use (v.)). Not a common word before c. 1840, when probably it was re-formed from use (v.) + -able. Related: Usably.
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commodification (n.)

"action of converting (something) into a commercial product or activity," 1968, from commodity + -fication "a making or causing." Originally in Marxist political theory, "the assignment of a market value," often to some quality or thing that the user of the word feels would be better off without it.

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prompt (n.)

early 15c., "readiness" (in phrase in prompte), from Latin promptus (see prompt (v.)). Meaning "hint, information suggested, act of prompting" is from 1590s. The computer sense of "message given by a computer requiring or helping the user to respond" is by 1977.

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