adjective Etymology: Middle English, from Old English fēowerfeald, from fēower + -feald -fold Date: before 12th century being four times as great or as many, having four units or members, ~ adverb
FOURFOLD
Meaning of FOURFOLD in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012