Groovy

Groovy (or, less commonly, "groovie" or "groovey") is a slang colloquialism popular during the 1950s, '60s and '70s. It is roughly synonymous with words such as "excellent", "fashionable", or "amazing", depending on context.
History.
The word originated in the jazz culture of the 1920s, in which it referred to the “groove” of a piece of music (its rhythm and “feel”), plus the response felt by its listeners. It can also reference the physical groove of a record in which the pick-up needle runs. Radio disc jockeys would announce playing “good grooves, hot grooves, cool grooves, etc.” when introducing a record about to play.
Recorded use of the word in its slang context has been found dating back to September 30, 1941, when it was used on the "Fibber McGee and Molly" radio show; band leader Billy Mills used it to describe his summer vacation. In the 1941 song “Let me off Uptown” by Gene Krupa, Anita O’Day invites Roy Eldridge to “… come here Roy and get groovy”. The 1942 film "Miss Annie Rooney" features a teenage Shirley Temple using the term as she impresses Dickie Moore with her jitterbug moves and knowledge of jive. In the 1945 film "A Thousand and One Nights", Phil Silvers uses the term to describe an ostentatiously bejeweled turban.
It has been found in print as early as 1946, in "Really the Blues", the autobiography of jazz saxophonist Mezz Mezzrow. The word appears in advertising spots for the 1947 film "Miracle on 34th Street", and in the same year the phrase “Everything’s groovy” was included on a 78 rpm recording of “Open The Door, Richard” sung by Walter Brown with Tiny Grimes Sextet.
The term has largely vanished from everyday use.
Song titles.
Starting in the 1940s, variations of the word were used in the titles of many popular songs, including:
Movies, television, and video games.
An early use of the word is in the trailer to the 1947 film "Miracle on 34th Street", which depicts various viewers reactions to the films, wherein a few of the younger viewers use the word “groovy” to describe the film. 
The term was also part of the title of a TV program called "The Groovy Show", which ran from 1967 to 1970. There was also an American TV cartoon show called "Groovie Goolies", which ran from 1970 to 1972.
By the early 1970s, the word was commonplace in American TV advertisements aimed at young audiences, as exemplified by the slogan "Feeling groovy, just had my Cheerios."
An early ironic use of the term appears in the title of the 1974 film "The Groove Tube", which satirized the American counterculture of the time.
The term was later used jokingly in films such as "Evil Dead II", "Army of Darkness", and the Austin Powers films, as well as in the "Duke Nukem 3D" video game.
Albums.
It later made its way into the titles of albums, such as "Groovy Decay", a 1982 album by Robyn Hitchcock, and "Groovy, Laidback and Nasty", a 1990 album by Cabaret Voltaire. Examples of band names include Groovy Aardvark from Canada, The Groovy Little Numbers from Scotland, and Groovy Rednecks and the Flamin' Groovies from the US. There was also a band called Groovy Ruby.
In literature and comic books.
E. B. White used the term in the 1970 novel "The Trumpet of the Swan", which takes place in 1968. "'This is real groovy!' cried a boy in the front seat. 'That bird is as good as Louis Armstrong, the famous trumpet player.'"
Marvel Comics produced a Silver Age comic book entitled "Groovy", subtitled "Cartoons, gags, jokes". Only three issues were published, dated March, May and July 1967.