Entry 2 senses · 2 variants Webster, 1913 Twofold /to͞of'-ōld'/ · Two·fold · IPA /ˈtufoʊld/ a. adv. 01 a. Double; duplicate; multiplied by two; as, a twofold nature; a twofold sense; a twofold argument. 1. Double; duplicate; multiplied by two; as, a twofold nature; a twofold sense; a twofold argument. 02 adv. In a double degree; doubly. 1. In a double degree; doubly.