content 词源(Etymology) - 趣词词源[英文版]

content [content 词源字典]: content: The adjective and noun content come ultimately from the same source, but as their divergent pronunciations suggest, they reached English via different routes. Their common original is Latin contentus, past participle of continēre ‘hold together, enclose, contain’ (source of English contain, continent, continue, and countenance). The more recent borrowing, the noun content [15], comes directly from medieval Latin contentum, and retains the original meaning of the Latin verb.

The adjective content [14], however, comes via Old French content, and reflects a metaphorical change in the Latin past participle from ‘contained’ via ‘restrained’ and ‘self-restrained’ to ‘satisfied’.
=> contain, continent, continue, countenance, retentive[content etymology, content origin, 英语词源]
content (adj.): c. 1400, from Old French content, "satisfied," from Latin contentus "contained, satisfied," past participle of continere (see contain). Related: Contently (largely superseded by contentedly).
content (v.): early 15c., from Middle French contenter, from content (adj.) "satisfied," from Latin contentus "contained, satisfied," past participle of continere (see contain). Sense evolved through "contained," "restrained," to "satisfied," as the contented person's desires are bound by what he or she already has. Related: Contented; contentedly.
content (n.): "that which is contained," early 15c., from Latin contentum, contenta, noun use of past participle of continere (see contain). Meaning "satisfaction" is from 1570s; heart's content is from 1590s (Shakespeare).