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"twofold" is also used as a crossword clue. If that's what you saw, the answer is often double (6 letters).
Definitions
by a factor of two
Word origin
From Middle English twofold, from Old English twēofeald. Equivalent to two + -fold; cognate to Icelandic tvöfalt and Dutch tweevoudig.
Used in a sentence
“The wheat produced a twofold harvest.”
“a twofold nature; a twofold sense; a twofold argument”
“It is the tale of Ixion's twofold guilt, unnatural murder and unlawful love.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Double”7 letters
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