Etymology
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curation (n.)

late 14c., curacioun, "curing of disease, restoration to health," from Old French curacion "treatment of illness," from Latin curationem (nominative curatio), "a taking care, attention, management," especially "medical attention," noun of action from past-participle stem of curare "to cure" (see cure (v.)). From 1769 as "management, guardianship."

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curate (n.)

late 14c., "spiritual guide, ecclesiastic responsible for the spiritual welfare of those in his charge; parish priest," from Medieval Latin curatus "one responsible for the care (of souls)," from Latin curatus, past participle of curare "to take care of" (see cure (v.)). Church of England sense of "paid deputy priest of a parish" first recorded 1550s.

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curator (n.)

"a guardian; one who has care or superintendence of something," late 14c., curatour "a parish priest," from Latin curator "overseer, manager, guardian," agent noun from curatus, past participle of curare (see cure (v.)). From early 15c. in reference to those put in charge of minors, lunatics, etc.; meaning "officer in charge of a museum, library, etc." is from 1660s. Related: Curatorship.

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pedicure (n.)

1839, "one whose business is surgical care of feet" (removal of corns, bunions, etc.), from French pédicure, from Latin pes (genitive pedis) "foot" (from PIE root *ped- "foot") + curare "to care for," from cura "care" (see cure (n.1.)). In reference to the treatment itself, attested from 1890; specifically as a beauty treatment, by 1900.

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accurate (adj.)
1610s, "done with care," from Latin accuratus "prepared with care, exact, elaborate," past participle of accurare "take care of," from ad "to" (see ad-) + curare "take care of" (see cure (n.1)). The notion of doing something carefully led to that of being precise (1650s). A stronger word than correct (adj.), weaker than exact (adj.). Related: Accurately; accurateness.
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scour (v.1)

c. 1200, scouren, "cleanse by hard rubbing," probably via Middle Dutch scuren, schuren "to polish, to clean," and from Old French escurer, both from Late Latin excurare (Medieval Latin scurare) "clean off," literally "take good care of," from Latin ex "out," or here perhaps intensive (see ex-), + curare "care for, take care of" (see cure (v.)). OED suggests it entered the language as a technical term among Flemish workmen in England. From 1580s as "to wash vigorously." Related: Scoured; scouring. As a noun, 1610s, from the verb.

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curiosity (n.)

late 14c., "careful attention to detail" (a sense now obsolete); also "skilled workmanship;" also "desire to know or learn, inquisitiveness" (in Middle English usually in bad senses: "prying; idle or vain interest in worldly affairs; sophistry; fastidiousness"); from Old French curiosete "curiosity, avidity, choosiness" (Modern French curiosité), from Latin curiositatem (nominative curiositas) "desire of knowledge, inquisitiveness," from curiosus "careful, diligent; inquiring eagerly, meddlesome," akin to cura "care" (see cure (n.)). 

Neutral or good sense "desire to see or learn what is strange or unknown" is from early 17c. Meaning "an object of interest, something rare or strange" is from 1640s. Curiosity-shop is from 1818.

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procure (v.)

c. 1300, "bring about, cause, effect," from Old French procurer "care for, be occupied with; bring about, cause; acquire, provide" (13c.) and directly from Late Latin procurare "manage, take care of;" from pro "in behalf of" (see pro-) + curare "care for" (see cure (v.)).

The main modern sense of "obtain; recruit" (late 14c.) is via the meaning "take pains to get or bring about" (mid-14c.). It had broader meanings in Middle English: to procure to slay was "cause to be slain;" procure to break, "cause to be broken," etc. The meaning "to obtain (women) for sexual gratification" of others is attested from c. 1600. Related: Procured; procuring.

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secure (adj.)

1530s, "without care or fear, dreading no evil" (a sense now archaic), from Latin securus, of persons, "free from care, quiet, easy," also in a bad sense, "careless, reckless;" of things, "tranquil; free from danger, safe," from *se cura, from se "free from" (see se-) + cura "care" (see cure (n.)).

In early use it often implied "over-confident, too sure." In English, in reference to places, "free from danger, unexposed," by c. 1600. The mechanical meaning "firmly fixed" (of material things) is by 1841, extended from the mental meaning "affording grounds for confidence" (1580s) hence "of such stability, strength, etc. to preclude risk." Of telephones or telephone lines, "not wiretapped," by 1961.

The earlier word, or form of the word, was Middle English siker, from Old English sicor, an earlier borrowing of the same Latin word, and sure (adj.) is a doublet, altered in its passage through Old French. Related: Securely.

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curious (adj.)

mid-14c., "subtle, sophisticated;" late 14c., "eager to know, inquisitive, desirous of seeing" (often in a bad sense), also "wrought with or requiring care and art;" from Old French curios "solicitous, anxious, inquisitive; odd, strange" (Modern French curieux) and directly from Latin curiosus "careful, diligent; inquiring eagerly, meddlesome," akin to cura "care" (see cure (n.)).

The objective sense of "exciting curiosity" is by 1715 in English. In booksellers' catalogues, the word was a euphemism for "erotic, pornographic" (1877); such material was called curiosa (1883), the Latin neuter plural of curiosus. Related: Curiously; curiousness. Curiouser and curiouser is from "Alice's Adventures in Wonderland" (1865).

Curious and inquisitive may be used in a good or a bad sense, but inquisitive is more often, and prying is only, found in the latter. Curious expresses only the desire to know; inquisitive, the effort to find out by inquiry; prying, the effort to find out secrets by looking and working in improper ways. [Century Dictionary]
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