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two

/tuː/

The number 2; one more than one.

From Proto-Indo-European PIE *duwo- / *dwóh₁ (two).

noun
adjective
determiner
PIE *duwo- / *dwóh₁
Proto-Indo-European
Verified
*duwo- / *dwóh₁
reconstructed
Inherited numeral meaning “two”.

from PIE *duwo , variant of the root *dwo- "two." Two cheers for _____ , expressing qualified enthusiasm, is recorded...

+1 more source
Proto-Germanic
Verified
*twa
reconstructed
Germanic continuation of the numeral; source of many Germanic cognates.

from Proto-Germanic *twa (source also of Old Saxon and Old Frisian twene , twa , Old Norse tveir , tvau , Dutch twee ,...

+1 more source
Old English
Verified
twā
Feminine and neuter form in Old English; masculine twēġen survived as twain.

from Proto-Germanic *twa (source also of Old Saxon and Old Frisian twene , twa , Old Norse tveir , tvau , Dutch twee ,...

+1 more source
Middle English
Verified
two
Later spelling and pronunciation leveling in English.

from Middle English two, twa

Modern English
Verified
two
Current numeral and noun for the value 2.

from Middle English two, twa

Modern English
two

This one is pure numeral ancestry, but it still has a little family drama. Old English had twā for the feminine and neuter, while the masculine twin of the family was twēġen, the ancestor of twain — so English once kept track of gender even for “two.” That same old count survives in odd places like twin, twice, and the poker-faced deuce, all orbiting the same ancient idea of pairing and doubling. By 1951, E. M. Forster could joke about “two cheers for democracy,” and the number had already been busy in everyday life, from two-by-fours in 1884 to tango jokes about needing two people. Tiny word, enormous career: it’s the one that sits after one and quietly teaches English how to count.

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