Definition of "groupy"

From the need for a quorum for prayer to the rituals of birth, marriage, and death, Judaism is groupy. The covenant is between the Jewish people and the one God, not merely each individual Jew.

1991, David M. Gordis, Yoav Ben-Horin, Jewish Identity in America, page 78

[…] project found two basic types of music, that which is individualized and that which is integrated, or groupy.

2010, Rupert Till, Pop Cult: Religion and Popular Music, page 150

As a guide to the inside of a groupy's head the LP is quite interesting […]

1970, Beat Instrumental & International Recording, page 61