How did the word “groovy” come to acquire its current meaning?

The word “groovy” originates in jazz slang, referring to music that’s swinging, tight, funky, in the pocket. The analogy is to the groove in a vinyl record — the musicians are so together that it’s like they’re the needle guided by the groove.

Pick it up, lay it in the cut

The “groove” becomes generalized to any good rhythm, passage, or entire piece of music; “grooving” means making music well, and the adjective “groovy” follows.

From the Online Etymology Dictionary:

1937, Amer.Eng., in slang sense of “first-rate, excellent;” from jazz slang phrase in the groove (1932) “performing well (without grandstanding)”

The generalized sense of “groovy” meaning “cool” might be kind of dated, but among musicians the groove remains a term of art. For example, see my post on how to groove.

Grand Mixer DST

Original post on Quora