Back to explorer

entry

both

/boʊθ/

The two together; each of two

From Proto-Indo-European through Proto-Germanic ba (both) + Proto-Germanic þa (those).

pronoun
determiner
conjunction
ba
Proto-Indo-European
Verified
*bho
reconstructed
Reconstructed form meaning “both.”

from PIE *bho "both") + -þ extended base. Another traces it to the Proto-Germanic formula represented in Old English by...

Proto-Germanic
Verified
*bai
reconstructed
Inherited Germanic form meaning “both.”

from Proto-Germanic *bai. Cognate with Saterland Frisian bee (“both”), West Frisian beide (“both”), Dutch beide...

Old English
Verified
Used in the expression “both the” or “both those.”

from Old English bā þā (“both the; both those”) and possibly reinforced by Old Norse báðir

þa
Old English
AI-inferred
þā
Plural form of the demonstrative “that,” as in “both those.”
Middle English
AI-inferred
þe
The demonstrative element was reduced and fused in compounds such as bā þā.
Combined
Old English bā þā
A phrase meaning “both the” or “both those,” later fused into the single word Middle English bothe.
Middle English
Verified
bothe, boþe
The two elements had become a single pronoun and determiner.

from Middle English bothe, boþe

Modern English
Verified
both
Used for the two members of a pair, commonly with and.

from Middle English bothe, boþe

Modern English
both

Picture an Old English speaker pointing at two objects and saying something like “bā þā”—literally, “both those.” Over centuries, that little phrase was pressed together until Middle English speakers wrote it as bothe, much as frequent speech welds “going to” into “gonna.” The first half belongs to the old Germanic family of forms represented by Proto-Germanic *bai, while the second is related to the demonstrative behind English that and those. There is a delightful grammatical fossil here: both preserves a faint memory of the Indo-European dual, the number used specifically for two rather than for one or several. German beide, Dutch beide, and Scandinavian både are its close relatives, so when you say “both,” you are quietly joining a very large Germanic family reunion. Even ambidextrous—literally “right-handed on both sides”—carries the same idea in a Latin disguise: sometimes two really are better than one.

§