English numbers (edit)
 ←  1 2 3  → [a], [b]
    Cardinal: two
    Ordinal: second
    Frequency: twice
    Multiplier: double, twofold
    Distributive: doubly
    Fractional: half
    Number of musicians: duo, duet, duplet

Pronunciation change

Adjective change

Positive
twofold

Comparative
none

Superlative
none

  1. A twofold is two times the amount of something.
    The wheat produced a twofold harvest.