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"T" 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.

“T” Word Origins

thousand
Old English
From Old English þūsend, from a very old Germanic word for "thousand," found with similar forms across Germanic languages such as German tausend and Dutch duizend.
thousandth
Origin
From thousand plus the ordinal suffix -th.
Thrace
Latin
From Latin Thracia, from Greek Thrāíkē, ultimately linked to the name of the Thracian people.
thraldom
Origin
From Middle English thraldom, þraldom. Compare Danish trældom, Norwegian trelldom, Swedish träldom. By surface analysis, thral(l) + -dom.
thrall
Old English
From Old Norse þræll ("slave"), borrowed into Old English as þrǣl.
thran
Origin
Cognate with Scots thrawn. Doublet of thrown.
thrash
Old English
A variant of "thresh" (to separate grain from stalks by beating), from Old English þrescan.
thread
Old English
From Old English þrǣd, related to an ancient root meaning "to twist" — the same root that gives us "throw."
threadbare
English
From Middle English, literally "bare down to the thread": cloth worn until the nap is gone and only the woven threads remain.
threaded
Origin
From thread plus -ed.
threaden
Origin
From Middle English threden, thredyn (“made of thread”), equivalent to thread + -en (made of).
thready
Origin
From thread plus -y.
threap
Origin
From Middle English threp (“a rebuke”), from the verb (see below). Alternative etymology derives Middle English threp, from Old English *þrēap (“contention, strife”) (attested only as Old English þrēap, in the sense of "troop, band"), ultimately from the same Germanic origin below.
threat
Old English
From Old English þrēat, originally meaning "pressure" or "oppression," related to a root meaning "to squeeze or press."
threaten
Old English
From Old English þrēatnian, built from threat plus the verb-forming suffix -en.
threatening
Origin
From threaten plus -ing.
threatensome
Origin
From threaten + -some.
three
Latin
From Old English þrī, from a very old Indo-European root for the number three, shared with Latin trēs and Greek treîs.
threefold
Origin
From Middle English threfold, from Old English þrīfeald. Equivalent to three + -fold.
threeness
Origin
From three + -ness. Compare Middle English þrinnesse, þrimnesse, þremnesse, þrumnesse (“trinity”, literally “three-ness”), Old English þrīnes, þrīnness (“trinity”, literally “three-ness”).
threepeat
Origin
Blend of three + repeat.
threeside
Origin
From three + side.
threesome
Origin
From three plus the suffix -some, meaning "a group of."
threnetic
Origin
Ancient Greek θρηνητικός (thrēnētikós, “inclined to lament, querulous”). By surface analysis, threne + -etic.
threnody
Origin
From Ancient Greek θρηνῳδία (thrēnōidía, “lamentation”). Compare the New Latin thrēnōdia.
thresh
Origin
From Middle English thrasshen, thresche, threschen, threschyn, threshen, thresshen, tressyn, þreisshe, þresshe, from Old English þerscan, þrexan, from Proto-Germanic *þreskaną (“to thresh; to tread”), from Proto-Indo-European *terh₁- (“to rub, turn; to drill, pierce”). Doublet of thrash. Cognates Cognate with Dutch dorsen (“to thresh; to thrash”), German and Luxembourgish dreschen (“to thresh; to thrash”), Yiddish דרעשן (dreshn, “to thresh”), Danish tærske (“to thresh”), Faroese treskja (“to thresh”), Icelandic þreskja (“to thresh”), Norwegian Nynorsk treska, treske, treskja, treskje (“to thrash”), Swedish tröska (“to thresh”), Gothic 𐌸𐍂𐌹𐍃𐌺𐌰𐌽 (þriskan, “to thresh”), Finnish rehkiä (“to drudge; to toil”); also Welsh taradr (“auger, wimble; awl, borer; drill”), Latin terō (“to rub or triturate; to wear away or wear out, consume; to tread; to press with a mill; to pass, spend”), Greek τρίβω (trívo, “to grate; to rub”), Albanian tjerr (“to spin”), Belarusian це́рці (cjérci, “to rub; to polish; to pinch; to grind”), Bulgarian три́я (tríja, “to rub; to chafe; to grind”), Czech třít (“to rub; to spawn”), Polish tarć, treć, trzeć, trzyć (“to rub; to shred; to cut; to chafe; to crush; to sp
threshold
Old English
From Old English þresċold, "doorsill" — related to thresh (to beat grain), since a threshold was once literally the beaten, trodden strip of floor at a doorway.
thrice
Old English
From Old English þriwa ("three times") plus an old adverb-forming ending — the same pattern that gave us "once" and "twice."
thrift
Old Norse
From Old Norse þrift, "thriving condition" — thrift originally meant prosperity itself, before it narrowed to mean the careful habits that lead to it.
thrifting
English
From thrift store, itself from thrift in the sense of careful management of money.
thriftless
Origin
From Middle English thrifteles, þriftles, equivalent to thrift + -less.
thrifty
Middle English
Formed from thrift plus the adjective ending -y, dating back to Middle English.
thrill
Old English
From Old English þyrlian, "to pierce," related to thirl (an old word for a hole) — the sense shifted from a physical piercing to the figurative feeling of being "pierced" by excitement.
thriller
Origin
Formed from thrill plus the agent suffix -er, meaning "something that thrills."
thrillsville
Origin
From thrill + -s- + -ville, evoking a fictional town.
thrilly
Origin
From thrill + -y.
thring
Origin
From Middle English thringen, from Old English þringan (“to press, squeeze, crowd”), from Proto-West Germanic *þringwan, from Proto-Germanic *þrinhwaną (“to press, throng, crush”), from Proto-Indo-European *trenkʷ- (“to beat, hew, press”).
thrive
Old Norse
From Old Norse þrífa, meaning "to grasp" or "to prosper" — the idea of seizing opportunity is baked into the word's roots.
throat
Old English
From Old English þrote, going back to a Proto-Germanic root meaning "to swell" — likely a reference to the throat's visible movement when swallowing.
throb
Middle English
From Middle English throbben, likely imitative of the sound or feel of a pulse.
throe
Origin
The noun is probably derived partly: * from Middle English throu, throwe (“(chiefly in the plural) uterine contraction during the birth of a child; pain experienced while giving birth; suffering; a pain; emotional distress, anxiety”) [and other forms], perhaps from: ** Old English þrawu (rare), a variant of þrēa (“affliction, torment; disaster; oppression; a rebuke; severity; threat”), from Proto-West Germanic *þrau, from Proto-Germanic *þrawō (“longing; suffering”), from Proto-Indo-European *trewh₁-; and ** Old English þrōwian (“to endure, suffer”), from Proto-Germanic *þrōwijaną, probably from *þrawō (see above); and ** Old Norse þrá (“longing, yearning”), from Proto-Germanic *þrawō (see above); and * from Middle English throuen (“to endure distress, suffer; to be ill, to have a fever; to suffer (death, hardship, illness, punishment, etc.); to endure (sadness, hard work, etc.)”) [and other forms], from Old English þrōwian (see above). The current spelling of the word is a 16th-century variant of Middle English throu, throwe, perhaps to avoid confusion with throw (“act of turning or twisting; fit of bad temper or peevishness; look of anger, bad temper, irritation, etc., a grimace”
thrombosis
Ancient Greek
From Ancient Greek thrombosis, "clotting," from thrombos, "clot" or "lump."
throne
Latin
From Old French trone, from Latin thronus, from Greek thronos, "chair" or "seat."
throng
Old English
From Old English þrang, "crowd" or "press," related to a Germanic root meaning "to push" or "to force."
throstle
Origin
From Middle English throstle, throstel, from Old English þrostle, from Proto-West Germanic *þrostlā, possibly altered from or a diminutive of *þurstaz, related to *þrastuz, from Proto-Indo-European *trosdos.
throttle
Origin
From an old diminutive of "throat" — literally "little throat" — since throttling originally meant squeezing someone's windpipe.
throttler
Origin
From throttle + -er.
through
Old English
From Old English þurh, going back to a Proto-Indo-European root meaning "to pass through."