Two
/tuː/noun
The number equivalent to 1 plus 1.
Did you know?English two descends from a Proto-Indo-European root meaning “two” that also gave us twin, twice, and between — words built around pairing, doubling, and the space in the middle.
Etymological Timeline
Proto-Indo-European
PIE
*dwóh₁
“two”
Proto-Germanic
PGmc
*twai
“two”
Old English
OE
twā / tū
“two”
Middle English
ME
two
“two”
Modern English
English
two
“the number 2”