septuple

[…] hee is rid of the Deuill. Now he that is quit of so bad a Guest, shall septuple his owne woes by his re-entertainment.

[…] Levi Strauss had caught a wave. Between 1962 and 1970, its sales and net profits grew fivefold and between 1970 and 1977 its sales again quintupled while profits almost septupled.