Pronunciation
- IPA: /θwɔːt/ (UK); /θwɔɹt/ (US)[1]
Etymology
It is inherited from Middle English thwerten, from thwert “across”,[2][3][4][5][6] from Old Norse þvert (“across”), the neuter of þverr “transverse”.[2][3][4][5][6] It is related to Old English þweorh “crooked, perverse” and Gothic þwairhs “angry”.[3][4][6] The noun “rower's seat” is an alteration of obsolete thoft, from Old English thofte.[5]
Earliest recorded meaning
As a verb, to oppose or hinder (about 1250).[3][4][5][7]
Semantic evolution
The adverb meant “across, crosswise”,[7][4][3] and the verb had physical senses such as to lie across or to cross (1413).[7][4] The verb's sense of opposing or hindering is the oldest,[3][4][7] and it now usually means to prevent someone from accomplishing a purpose.[2][5][6] The spelling with -a- dates from the 15th century.[4] The noun meaning a seat across a boat is dated 1721 by the OED[7] and about 1736 by Barnhart and Merriam-Webster.[3][5]
Timeline
- probably before 1200 – thwertover, across.[3][4]
- about 1250 – verb, to oppose.[3][4][7]
- before 1350 – adverb, across.[7]
- 1413 – verb, to pass across.[7]
- 1611 – noun, a hindrance.[7][3]
- 1721 – a rower's seat.[7]
Modern meaning
Verb
- To prevent someone from accomplishing something; to frustrate or foil.
- To oppose and defeat a plan or effort.
Noun
- A seat across a boat on which a rower sits.
Adjective
- Lying across; transverse.
- (archaic) Perverse or obstinate.
Adverb
- Across; athwart.
Word family
- thwarter
- thwartly
- thwartedly
- athwart
Related words
- overthwart
Usage notes
Random House distinguishes thwart, frustrate and baffle.[6] Thwart suggests stopping someone by opposing or blocking their efforts, while frustrate implies making all efforts useless.[6] Baffle suggests defeat through confusion or perplexity.[6]
References
- ^ Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
- ^ a b c d e f g h i j Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
- ^ a b c d e f g h i j Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c d e f Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
- ^ a b c d e f g Random House Webster's Unabridged Dictionary (1999), 2nd ed., New York: Random House
- ^ a b c d e f g h i j Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
Related etymologies
Cite this entry
“Thwart.” Etymologically, 11 Oct. 2026, etymologically.com/en/thwart. Accessed 11 Oct. 2026.
Last edited on . ·