twi-

From Middle English twi-, from Old English twī- (“two, double”), from Proto-Germanic *twi-, *twī- (“two-, double-”), from Proto-Indo-European *dwi- (“two-, double-”) (compare Proto-Germanic *twiz (“twice”), from Proto-Indo-European *dwís (“twice”)), from Proto-Indo-European *duwo-, *dwóh₁- (“two”).

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

Cognate with German zwie- (“twice”), Swedish tve- (“twi-, double”), Old Prussian dwi- (“twi-”), Latin bī-, bis (“twice”) (< Old Latin duī-, duis).

twi-

1. (rare or no longer productive) two

   twi-headed

2. (rare or no longer productive) double, both

   twilight, twi-tongued

• duo-
• di-
• twy-
• twin-

• Tiw, WIT, wit, wit', wit.

• tƿi-

From Proto-Germanic *twi-.

twi- or twī-

1. two; two-, double

   twiecge "two-edged"

   twidǣlan "to divide, split in two"

   twibēte "subject to double compensation"

2. twice, bi-

   twibrowen "twice-brewed"

3. denoting double-mindedness, doubt, uncertainty, or disunity

   twirǣde "uncertain; in disagreement"

   twisehtan "to disagree"

• Middle English: twi-, twei-, twy-
  • English: twi-