blow your mind
keep on truckin'
make love not war
way out
bummer
Don't trust anyone over 30
heavy
cop out
If it feels good, do it
Outta Sight
Strawberry Fields
Tripping
The Electric Kool-Aid Acid Test
Ken Kesey and the Merry Pranksters
Whole Earth Catalog
Frank Zappa Crappa
Frodo Lives
No nukes is good nukes
what a rush
Tricky Dick
If you can remember it, you weren't there.
I think that "groovy" was coined in the Twenties, went out of style and was resurrected in the Sixties.
A truly Sixties term for "groovy" would be "psychedelic". "Far out" was coined in the Fifties but still current in the Sixties.
All of these terms were approximately synonymous and used as superlatives. It depended on how you said the word. "Groovy" could be toned down to just mean "OK". It could be mellow.
"Awesome" would fit in as an 80's version of all of these. "Awesome" is used as a superlative but is so overused that it often only means "OK". It's meaning is also governed largely by intonation.
Superlatives depend on the tone of voice, how it is stressed and the context. "Psychedelic" is normally pronounced with a stress on the penultimate syllable - "psych uh DEL ic". But as a superlative it would be intoned as "PSYCH uh DEL ic" with two stresses.
Terminology in reference to so-called "minorities" was much different up through the Sixties. The term "Nigger" was forced out around the Forties and replaced with "Negro". This functioned until about 1970 when a new generation of African-Americans insisted upon the term "Black". But the Sixties term would have been a degrading "Nigger" or the preferred term was "Negro". You never heard "Black" or "African-American". A Native American was called an "Indian". Women were "Girls" until they achieved age 30.