inert adj.

word-forming element meaning "not, opposite of, without" (also im-, il-, ir- by assimilation of -n- with following consonant, a tendency which began in later Latin), from Latin in- "not," cognate with Greek an-, Old English un-, all from PIE root *ne- "not."

In Old French and Middle English often en-, but most of these forms have not survived in Modern English, and the few that do (enemy, for instance) no longer are felt as negative. The rule of thumb in English has been to use in- with obviously Latin elements, un- with native or nativized ones.

early 13c., "skill as a result of learning or practice," from Old French art (10c.), from Latin artem (nominative ars) "work of art; practical skill; a business, craft," from PIE *ar(ə)-ti- (source also of Sanskrit rtih "manner, mode;" Greek artizein "to prepare"), suffixed form of root *ar- "to fit together." Etymologically akin to Latin arma "weapons" (see arm (n.2)).

In Middle English usually with a sense of "skill in scholarship and learning" (c. 1300), especially in the seven sciences, or liberal arts. This sense remains in Bachelor of Arts, etc. The meaning "human workmanship" (as opposed to nature) is from late 14c. The meaning "system of rules and traditions for performing certain actions" is from late 15c. The sense of "skill in cunning and trickery" is attested by late 16c. (the sense in artful, artless). The meaning "skill in creative arts" is recorded by 1610s; especially of painting, sculpture, etc., from 1660s.

In science you must not talk before you know. In art you must not talk before you do. In literature you must not talk before you think. [Ruskin, "The Eagle's Nest," 1872]

Supreme art is a traditional statement of certain heroic and religious truths, passed on from age to age, modified by individual genius, but never abandoned. The revolt of individualism came because the tradition had become degraded, or rather because a spurious copy had been accepted in its stead. [William Butler Yeats, journal, 1909]

Expression art for art's sake (1824) translates French l'art pour l'art. First record of art critic is from 1847. Arts and crafts "decorative design and handcraft" is from the Arts and Crafts Exhibition Society, founded in London in 1888.