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fabulous (adj.)[fabulous 词源字典]: early 15c., "mythical, legendary," from Latin fabulosus "celebrated in fable;" also "rich in myths," from fabula "story, tale" (see fable (n.)). Meaning "pertaining to fable" is from 1550s. Sense of "incredible" first recorded c. 1600, hence "enormous, immense, amazing," which was trivialized by 1950s to "marvelous, terrific." Slang shortening fab first recorded 1957; popularized in reference to The Beatles, c. 1963.
Fabulous (often contracted to fab(s)) and fantastic are also in that long list of words which boys and girls use for a time to express high commendation and then get tired of, such as, to go no farther back than the present century, topping, spiffing, ripping, wizard, super, posh, smashing. [Gower's 1965 revision of Fowler's "Modern English Usage"]
Related: Fabulously; fabulousness.[fabulous etymology, fabulous origin, 英语词源]
punk (n.2): "worthless person" (especially a young hoodlum), 1917, probably from punk kid "criminal's apprentice," underworld slang first attested 1904 (with overtones of "catamite"). Ultimately from punk (n.1) or else from punk "prostitute, harlot, strumpet," first recorded 1590s, of unknown origin.

For sense shift from "harlot" to "homosexual," compare gay. By 1923 used generally for "young boy, inexperienced person" (originally in show business, as in punk day, circus slang from 1930, "day when children are admitted free"). The verb meaning "to back out of" is from 1920.

The "young criminal" sense is no doubt the inspiration in punk rock first attested 1971 (in a Dave Marsh article in "Creem," referring to Rudi "Question Mark" Martinez); popularized 1976.
If you looked different, people tried to intimidate you all the time. It was the same kind of crap you had to put up with as a hippie, when people started growing long hair. Only now it was the guys with the long hair yelling at you. You think they would have learned something. I had this extreme parrot red hair and I got hassled so much I carried a sign that said "FUCK YOU ASSHOLE." I got so tired of yelling it, I would just hold up the sign. [Bobby Startup, Philadelphia punk DJ, "Philadelphia Weekly," Oct. 10, 2001]
sad (adj.): Old English sæd "sated, full, having had one's fill (of food, drink, fighting, etc.), weary of," from Proto-Germanic *sathaz (cognates: Old Norse saðr, Middle Dutch sat, Dutch zad, Old High German sat, German satt, Gothic saþs "satiated, sated, full"), from PIE *seto- (cognates: Latin satis "enough, sufficient," Greek hadros "thick, bulky," Old Church Slavonic sytu, Lithuanian sotus "satiated," Old Irish saith "satiety," sathach "sated"), from root *sa- "to satisfy" (cognates: Sanskrit a-sinvan "insatiable").

Sense development passed through the meaning "heavy, ponderous" (i.e. "full" mentally or physically), and "weary, tired of" before emerging c. 1300 as "unhappy." An alternative course would be through the common Middle English sense of "steadfast, firmly established, fixed" (as in sad-ware "tough pewter vessels") and "serious" to "grave." In the main modern sense, it replaced Old English unrot, negative of rot "cheerful, glad."

Meaning "very bad" is from 1690s. Slang sense of "inferior, pathetic" is from 1899; sad sack is 1920s, popularized by World War II armed forces (specifically by cartoon character invented by Sgt. George Baker, 1942, and published in U.S. Armed Forces magazine "Yank"), probably a euphemistic shortening of common military slang phrase sad sack of shit.
sick (adj.): "unwell," Old English seoc "ill, diseased, feeble, weak; corrupt; sad, troubled, deeply affected," from Proto-Germanic *seukaz, of uncertain origin. The general Germanic word (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 displaced by krank "weak, slim," probably originally with a sense of "twisted, bent" (see crank (n.)).

Restricted meaning "having an inclination to vomit, affected with nausea" is from 1610s; sense of "tired or weary (of something), disgusted from satiety" is from 1590s; phrase sick and tired of is attested from 1783. Meaning "mentally twisted" in modern colloquial use is from 1955, a revival of the word in this sense from 1550s (sense of "spiritually or morally corrupt" was in Old English, which also had seocmod "infirm of mind"); sick joke is from 1958.