seventies noun 3adjective 1 noun[plural only]3 •The decade of the 1870s, 1970s, etc.I'm so bored of this decade, the seventies can't come soon enough. •The decade of one's life from age 70 through age 79.My grandma met her third wife when they were both in their seventies. •The range between 70 and 79.You don't need your parka today, it's in the seventies. adjective1 •From or evoking the 71st through 80th years of a century (chiefly the 1970s).I know the theme of the school dance is "The 1970s" but is covering the walls, floor, and ceiling with tie-dye too seventies?
