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defensible

[dih-fen-suh-buh l]
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adjective
  1. capable of being defended against assault or injury: The troops were bivouacked in a defensible position.
  2. that can be defended in argument; justifiable.
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Origin of defensible

1250–1300; Middle English < Late Latin defēnsibilis, equivalent to Latin defēns(us) (see defense) + -ibilis -ible; replacing Middle English defensable < Old French < Late Latin defēnsābilis, equivalent to defēnsā(re) (frequentative of dēfendere to defend) + -bilis -ble
Related formsde·fen·si·bil·i·ty, de·fen·si·ble·ness, nounde·fen·si·bly, adverbnon·de·fen·si·bil·i·ty, nounnon·de·fen·si·ble, adjectivenon·de·fen·si·ble·ness, nounnon·de·fen·si·bly, adverbun·de·fen·si·ble, adjectiveun·de·fen·si·ble·ness, nounun·de·fen·si·bly, adverb

Synonyms

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2. suitable, fit, tenable, allowable, warrantable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for defensibly

defensible

adjective
  1. capable of being defended, as in war, an argument, etc
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Derived Formsdefensibility or defensibleness, noundefensibly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for defensibly

defensible

adj.

late 13c., from Old French defensable, from Late Latin defensibilem, from Latin defens-, past participle stem of defendere (see defend).

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Online Etymology Dictionary, © 2010 Douglas Harper