septupled

Verb

septuple (third-person singular simple present septuples, present participle septupling, simple past and past participle septupled)

1. (transitive) To multiply by seven.
   • […] 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.1615, Thomas Adams, The Blacke Devil or The Apostate, Together with The Wolfe Worrying the Lambes, London, page 2
2. (intransitive) To increase by a factor of seven.
   • […] 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.1980, Landon Y. Jones, chapter 17, in Great Expectations: America and the Baby Boom Generation, New York: Ballantine, page 262

See all 5 meanings of septuple