Etymology From Middle English tenfold, tenfolde, from Old English tīenfeald, equivalent to ten + -fold.
1
Ten times as much or as many.
[F]ull of death, and fierce vvith tenfold froſt, / The long long night, incumbent o'er their heads, / Falls horrible.a. 1749 (date written), James Thomson, “Winter”, in The Seasons, London: […] A[ndrew] Millar, and sold by Thomas Cadell, […], published 1768, →OCLC, page 198, lines 923–925:
Some 460,000 Americans are behind bars for drug offenses--a tenfold increase over 1980.2001 May 7, Margot Roosevelt et al., “The War Against The War On Drugs”, in TIME, archived from the original on 01 Feb 2012:
Etymology From Middle English tenfold, tenfolde, from Old English tīenfeald, equivalent to ten + -fold.
1
By ten times as much.
1896, William Allen Sylvester, Modern Carpentry and Building, page 142, "But, since we have increased the original value of 26 tenfold its original value, we must increase the original result tenfold : ten times 2 equal 20, the required answer."
I am here [in prison] for committing a crime, yet I see the state officials commit crimes that are ten fold worse and they do it without ramifications.1987 August 15, Stephen William Gumpl, “Refusing To Become A Piece”, in Gay Community News, volume 15, number 5, page 4:
tenfold
verb
Etymology From Middle English tenfold, tenfolde, from Old English tīenfeald, equivalent to ten + -fold.
1
To increase to ten times as much; to multiply by ten.