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Etymology — The origins of English words

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.

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substation
Origin
From sub- ("under, secondary") plus station.
switchblade
Origin
A compound of switch (in the sense of a quick mechanical action) and blade.
seniority
Medieval Latin
From Medieval Latin senioritas, built on Latin senior, "elder."
scrambler
Origin
Formed from scramble plus the agent suffix -er.
saver
Origin
From "save" plus the agent-noun ending "-er."
Maura
Irish
Either from Irish Máire and Scottish Gaelic Màiri, or from Italian Maura. When borrowed from Irish, a doublet of Moira.
collaborator
French
Borrowed from French collaborateur.
extinguisher
Origin
Formed from extinguish plus the agent ending -er.
Brendan
Irish
Anglicized from Irish Bréanainn, ultimately from a Celtic root meaning "preeminent, outstanding."
excavator
Origin
From excavate + the agent suffix -or.
horse
Old English
From Old English hors, going back through Germanic roots to a very old Indo-European word meaning "to run" — making "horse" a distant relative of "car" and "chariot."
aisle
Latin
From Middle English ele, borrowed from Anglo-Norman ele ("wing"), ultimately from Latin āla. The modern spelling and pronunciation were reshaped later under the influence of the unrelated word "isle."
sander
Origin
Formed from "sand" plus the agent suffix "-er," meaning something that sands.
tian
French
From French, ultimately from Greek tēganon, "frying pan."
eviction
Late Latin
From Middle French éviction, from Late Latin ēvictiō, related to the verb "evict."
Meiji
Japanese
From Japanese 明治 (meiji), meaning roughly "enlightened rule."
lime
French
From Old English līm ("glue, mortar"), related to Germanic words for "glue"; the citrus-fruit sense entered English separately via French and ultimately Arabic/Persian.
eroticism
Origin
From "erotic" plus the suffix -ism.
Hiram
Hebrew
From Biblical Hebrew חִירָם (Ḥirám, "high-born"), possibly from Phoenician, or a shortened form of a name meaning "brother of the exalted."
OxyContin
Origin
A trademarked name built from "oxycodone."
spousal
Latin
From spouse plus the adjective suffix "-al", ultimately tracing back through Old French to Latin.
swampy
Origin
From swamp + the adjective suffix "-y."
scalding
Latin
From the verb "scald," ultimately tracing back to Latin excaldāre, "to bathe in hot water," from ex- + caldus, "hot."
memorabilia
Latin
Borrowed from Latin memorābilia, literally "things worth remembering."