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regrettable

or re·gret·a·ble

[ri-gret-uh-buh l]
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adjective
  1. causing or deserving regret; unfortunate; deplorable.
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Origin of regrettable

1595–1605; < Middle French regret(t)able; see regret, -able
Related formsre·gret·ta·ble·ness, nounre·gret·ta·bly, adverbun·re·gret·ta·ble, adjectiveun·re·gret·ta·bly, adverb
Can be confusedregretful regrettableregretfully regrettably
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for unregrettably

regrettable

adj.

c.1600, "deserving of regret," from regret + -able. Related: Regrettably.

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Online Etymology Dictionary, © 2010 Douglas Harper