Twi-

Origin

From Middle English twi-, from Old English twī- ("two, double"), from Proto-Germanic *twi-, *twī- ("two-, double-"), from Proto-Germanic *twiz ("twice"), from Proto-Indo-European *duis ("twice"), from *duwo ("two"), *dwóh₁ (compare English duo).

Compare twin, twice, two, and see more details at two.

Cognate with German zwie- ("twice"), Old Prussian dwi- ("twi-"), Latin bī-, bis ("twice") (< Old Latin duī-, duis).

Prefix

prefixes

1. (rare or no longer productive) twotwi-headed
2. (rare or no longer productive) double, bothtwilight, twi-tongued

Synonyms

• duo-
• di-
• twy-
• twin-

Derived terms