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Semantic change (also semantic shift, semantic progression, semantic development, or semantic drift) is a form of language change regarding the evolution of word usage—usually to the point that the modern meaning is radically different from the original usage. In diachronic (or historical) linguistics, semantic change is a change in one of the meanings of a word. Every word has a variety of senses and connotations, which can be added, removed, or altered over time, often to the extent that cognates across space and time have very different meanings. The study of semantic change can be seen as part of etymology, onomasiology, semasiology, and semantics. Awful — Literally "full of awe", originally meant "inspiring wonder (or fear)", hence "impressive". In contemporary usage, the word means "extremely bad". Awesome — Literally "awe-inducing", originally meant "inspiring wonder (or fear)", hence "impressive". In contemporary usage, the word means "extremely good". Terrible — Originally meant "inspiring terror", shifted to indicate anything spectacular, then to something spectacularly bad. Terrific — Originally meant "inspiring terror", shifted to indicate anything spectacular, then to something spectacularly good. Nice — Originally meant "foolish, ignorant, frivolous, senseless." from Old French nice (12c.) meaning "careless, clumsy; weak; poor, needy; simple, stupid, silly, foolish," from Latin nescius ("ignorant or unaware"). Literally "not-knowing," from ne- "not" (from PIE root *ne- "not") + stem of scire "to know" (compare with science). "The sense development has been extraordinary, even for an adj." [Weekley] -- from "timid, faint-hearted" (pre-1300); to "fussy, fastidious" (late 14c.); to "dainty, delicate" (c. 1400); to "precise, careful" (1500s, preserved in such terms as a nice distinction and nice and early); to "agreeable, delightful" (1769); to "kind, thoughtful" (1830). Naïf or Naïve —Initially meant "natural, primitive, or native" . From French naïf, literally "native".