decuples

The pleasures are decuples by being shared with friends.

The physiology of taste; or Transcendental gastronomy. Illustrated by anecdotes of distinguished artists and statesmen of both continents by Jean Anthelme Brillat-Savarin. Translated from the last Paris edition by Fayette Robinson. 2004

For nearly half of the year, then, irrigation adds seven thousand square miles to the humid surface of the Nile valley, or, in other words, more than decuples the area from which an appreciable quantity of moisture would otherwise be evaporated; for after the Nile has retired within its banks, its waters by no means cover one-tenth of the space just mentioned.

Earth as Modified by Human Action, The~ Chapter 04 (historical) 1874

For nearly half of the year, then, irrigation adds seven thousand square miles to the humid surface of the Nile valley, or, in other words, more than decuples the area from which an appreciable quantity of moisture would otherwise be evaporated; for after the Nile has retired within its banks, its waters by no means cover one-tenth of the space just mentioned.

The Earth as Modified by Human Action George P. Marsh 1841

The pleasures are decuples by being shared with friends.

The Physiology of Taste 1755-1826 Brillat-Savarin 1790