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"U" Word Origins

Where do words come from? Trace the origin and history of any English word, from its Latin, Greek or Old English roots through to its modern meaning. Every etymology is sourced.

“U” Word Origins

umbethink
Origin
From Middle English umbethenken, from Old English ymbeþencan, ymbþencan (“to think about, consider, deliberate”), from ymb- (“around”) + þencan (“to think”), equivalent to um- + bethink or umbe- + think.
umbilical
Latin
From Latin "umbilicus", meaning "navel", plus the adjective suffix "-al".
umbrage
Origin
From Middle French ombrage (“umbrage”), from Old French ombrage, from Latin umbrāticus (“in the shade”), from umbra (“shadow, shade”).
umbrageous
Origin
From Middle French ombrageux, or from umbrage + -ous.
umbrella
Late Latin
From Italian "ombrella" ("parasol"), from Late Latin "umbrella", influenced by "umbra" meaning "shade" or "shadow".
umbrous
Origin
umbra + -ous
umbworld
Origin
From umb- (“around, about”) + world, a calque of German Umwelt (early 19th c.). Compare Dutch omwereld, Swedish omvärld, etc., also from the German.
ume
Japanese
From Japanese "ume".
UMP
French
Borrowed from French UMP (“Union pour un Mouvement Populaire”).
umpire
Old French
From a Middle English mishearing of "a noumper" as "an oumper" — the same kind of word-boundary shift that gave us "an apron" from "a napron." It ultimately traces to Old French nonper, "not equal," since an umpire is the odd, tie-breaking third party.
umpteen
Origin
From ump (“a colloquial name for the dash "—" in Morse code”) + -teen. Unrelated to ump as in umpire, and simply a mnemonic rhyming aid.
umstroke
Origin
From um- + stroke.
Una
Irish
Anglicized form of Irish Úna. Doublet of Oona.
unability
Origin
From un- + ability.
unable
Middle English
From Middle English unable, formed from un- ("not") plus able.
Unabomber
Origin
From "UNiversity and Airline BOMBer," the FBI's case file designation.
unabridged
Latin
From un- 'not' plus abridged, which came through Old French from Latin abbreviare 'to shorten'.
unaccelerate
Origin
From un- + accelerate.
unacceptable
Middle English
From Middle English unacceptabylle, built from un- plus acceptable.
unaccompanied
Origin
From un- + accompanied.
unaccounted
Origin
From un- + accounted.
unacquire
Origin
From un- + acquire.
unaffected
Origin
From un- + affected.
unalive
Origin
From un- + alive. Internet usage originates from circumventing social media algorithms that were believed to penalise the use of the words related to death, especially “die”, “kill”, and “suicide”. According to linguist Adam Aleksic, the word in the verb sense of “die, kill” first appeared in a 2013 episode of Ultimate Spider-Man, exploding in usage after a few viral videos in early 2021 popularized it. Since early 2022, unalive has become very widespread even outside Internet usage contexts, especially among adolescents. Aleksic argues that the word unalive has gained so much popularity because of a time-invariant tendency to refer to death by euphemism; compare the word die’s displacement of swelt, or the use of pass away.
unallowable
Origin
From un- + allowable.
unalloyed
Origin
From un- + alloyed.
unaltering
Origin
From un- + altering.
unamenable
Origin
From un- + amenable.
unangelic
Origin
From un- + angelic.
unanimity
Origin
From unanim(ous) + -ity, from Middle French unanimité, from Late Latin ūnanimitās. Displaced native Old English ānmōdnes (literally “one-mindedness”).
unanimous
Latin
From Latin unanimus, "of one mind," combining unus ("one") and animus ("mind, spirit").
unanimously
Origin
From unanimous + -ly.
unanswered
Middle English
From Middle English unansuered, built from un- + answered.
unapologetic
Origin
From un- + apologetic.
unapprehensive
Origin
From un- + apprehensive.
unapt
Origin
From Middle English unapt, equivalent to un- + apt.
unarm
Origin
From un- + arm.
unassociated
Origin
From un- + associated.
unassumingness
Origin
From unassuming + -ness.
unattainable
Origin
From un- + attain + -able.
unattended
Origin
From un- + attended.
unauthentic
Origin
From un- + authentic.
unavailing
Origin
From un- + availing.
unavoidable
Middle English
From Middle English unavoidable, built from un- + avoidable.
unawakening
Origin
From un- + awakening.
unawaking
Origin
From un- + awaking.
unawares
Origin
From unaware + the adverbial -s ending, and actually recorded in English before "unaware" itself.
unbar
Origin
From Middle English unbarren, equivalent to un- + bar.