car-sick adj.

c. 1300, "wheeled vehicle," from Anglo-French carre, Old North French carre, from Vulgar Latin *carra, related to Latin carrum, carrus (plural carra), originally "two-wheeled Celtic war chariot," from Gaulish karros, a Celtic word (compare Old Irish and Welsh carr "cart, wagon," Breton karr "chariot"), from PIE *krsos, from root *kers- "to run." The Celtic-Latin word also made it into Greek, as karron "wagon with four wheels."

"From 16th to 19th c. chiefly poetic, with associations of dignity, solemnity, or splendour ..." [OED]. Used in U.S. by 1826 of railway freight carriages and of passenger coaches on a railway by 1830; by 1862 of streetcars or tramway cars. The extension to "automobile" is by 1896, but between 1831 to the first decade of 20c. the cars meant "railroad train." Car bomb is attested from 1972, in a Northern Ireland context. The Latin word also is the source of Italian and Spanish carro, French char.

Middle English sik, from Old English seoc "ill, unwell, diseased, feeble, weak; corrupt; sad, troubled, deeply affected by strong feeling," from Proto-Germanic *seuka-, which is of uncertain origin.

It is the general Germanic word (compare Old Norse sjukr, Danish syg, Old Saxon siok, Old Frisian siak, Middle Dutch siec, Dutch ziek, Old High German sioh, Gothic siuks "sick, ill"), but in German and Dutch it was displaced by krank "weak, slim," probably via the notion of "twisted, bent" (see crank (n.)).

The restricted meaning of English sick, "having an inclination to vomit, affected with nausea," is from 1610s. By c. 1200 as "distressed emotionally by grief, anger, etc.; physically ill through emotional distress. The sense of "tired or weary (of something), disgusted from satiety" is from 1590s; the figurative phrase sick and tired of is attested from 1783. To worry (oneself) sick is by 1952.

The modern colloquial meaning "mentally twisted" is by 1955, a revival of the word's use in this sense from 1550s (the sense of "spiritually or morally corrupt" was in Old English, which also had seocmod "infirm of mind"). Sick joke is attested by 1958.