Speaking of etymology: up crops this fascinating list of the years that specific words entered usage.

1904 , hip , 1937 , dunk , 1971 , green
1905 , whizzo , 1938 , cheeseburger , 1972 , Watergate
1906 , teddy bear , 1939 , Blitzkrieg , 1973 , F-word
1907 , egghead , 1940 , Molotov cocktail , 1974 , punk
1908 , realpolitik , 1941 , snafu , 1975 , detox
1909 , tiddly-om-pom-pom , 1942 , buzz , 1976 , Trekkie
1910 , sacred cow , 1943 , pissed off , 1977 , naff all
1911 , gene , 1944 , DNA , 1978 , trainers
1912 , blues , 1945 , mobile phone , 1979 , karaoke
1913 , celeb , 1946 , megabucks , 1980 , power dressing
1914 , cheerio , 1947 , Wonderbra , 1981 , toyboy
1915 , civvy street , 1948 , cool , 1982 , hip-hop
1916 , U-boat , 1949 , Big Brother , 1983 , beatbox
1917 , tailspin , 1950 , brainwashing , 1984 , double-click
1918 , ceasefire , 1951 , fast food , 1985 , OK yah
1919 , ad-lib , 1952 , Generation X , 1986 , mobile
1920 , demob , 1953 , hippy , 1987 , virtual reality
1921 , pop , 1954 , non-U , 1988 , gangsta
1922 , wizard , 1955 , boogie , 1989 , latte
1923 , hem-line , 1956 , sexy , 1990 , applet
1924 , lumpenproletariat , 1957 , psychedelic , 1991 , hot-desking
1925 , avant garde , 1958 , beatnik , 1992 , URL
1926 , kitsch , 1959 , cruise missile , 1993 , having it large
1927 , sudden death , 1960 , cyborg , 1994 , Botox
1928 , Big Apple , 1961 , awesome , 1995 , kitten heels
1929 , sex , 1962 , bossa nova , 1996 , ghetto fabulous
1930 , drive-in , 1963 , peacenik , 1997 , dot-commer
1931 , Mickey Mouse , 1964 , byte , 1998 , text message
1932 , bagel , 1965 , miniskirt , 1999 , Google
1933 , dumb down , 1966 , acid , 2000 , bling bling
1934 , pesticide , 1967 , love-in , 2001 , 9/11
1935 , racism , 1968 , It-girl , 2002 , axis of evil
1936 , spliff , 1969 , microchip , 2003 , sex up
1970 , hypermarket , 2004 , chav

Source - Larpers and Shroomers: The language report

We had kitsch sacred cows for whom we had already dumbed down, yet we had no word for racism?