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unforgettable

[uhn-fer-get-uh-buh l] /ˌʌn fərˈgɛt ə bəl/
adjective
1.
impossible to forget; indelibly impressed on the memory:
scenes of unforgettable beauty.
Origin of unforgettable
1800-1810
1800-10; un-1 + forgettable
Related forms
unforgettableness, noun
unforgettably, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for unforgettable

unforgettable

/ˌʌnfəˈɡɛtəbəl/
adjective
1.
impossible to forget; highly memorable
Derived Forms
unforgettably, 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
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Word Origin and History for unforgettable
adj.

1806, from un- (1) "not" + forgetable (see forget). Related: Unforgettably.

Online Etymology Dictionary, © 2010 Douglas Harper
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