Meaning of -FOLD in English

|fōld suffix

Etymology: Middle English -fold, -fald, from Old English -feald; akin to Old High German -falt -fold, Old Norse -faldr, Gothic -falths; derivatives from the root of English fold (III)

1. : multiplied by (a specified number) : times — in adjectives

a twelve fold increase

and adverbs

it will repay you ten fold

2. : having (so many) laps, layers, or parts

the three fold aspect of the problem

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.