SEVENTIES

[plural] [noun]The seventies is the range of temperature between 70° and 79°.The temperature is expected to be reach the seventies tomorrow.The seventies is also the period of years between 70 and 79 in any century.Flared trousers and platform shoes were fashionable in the seventies (= between 1970 and 1979).A person's seventies are the period in which they are aged between 70 and 79.He's very active considering he's in his seventies.