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four

/fɔr/

The number following three and preceding five

From Proto-Indo-European four (four).

noun
determiner
four
Proto-Indo-European
Verified
*kwetwer-
reconstructed
Reconstructed root meaning “four”; ancestor of numerous Indo-European number words.

from PIE root *kwetwer- "four." The phonetic evolution of the Germanic forms has not been fully explained; Watkins...

Proto-Germanic
Verified
*fedwōr
reconstructed
Germanic form, also reflected in Gothic fidwōr and German vier.

from Proto-Germanic *fedwores (source also of Old Saxon fiuwar , Old Frisian fiower , fiuwer , Frankish *fitter- ,...

+1 more source
Old English
Verified
fēower
Used for the number four and for fourfold quantities.

from Old English fēower

Middle English to Modern English
Verified
four
The spelling stabilized while the initial consonant and vowel developed toward modern /fɔr/.

from Middle English four

Modern English
four

Before English had its modern “four,” the word was already traveling across the Indo-European world, changing outfits as it went: Proto-Germanic speakers said something like *fedwōr, while Gothic preserved fidwōr and Latin kept quattuor. English’s Old English fēower looks surprisingly elaborate, but centuries of sound change trimmed it down to four. The same ancient counting word also produced Latin quattuor, which later became Spanish cuatro, French quatre, and Italian quattro—the family resemblance is hiding in plain sight. That Italian form appears in quattrocento, literally “four hundred,” the label for the art of the 1400s, a period beginning in 1400. So every time you say “four,” you are joining a multilingual counting chorus whose oldest surviving echo may be more than five thousand years old.

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