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sharpen

[shahr-puh n]
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verb (used with or without object)
  1. to make or become sharp or sharper.
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Origin of sharpen

late Middle English word dating back to 1400–50; see origin at sharp, -en1
Related formssharp·en·er, nounpre·sharp·en, verb (used with object)re·sharp·en, verbun·sharp·ened, adjectiveun·sharp·en·ing, adjectivewell-sharp·ened, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for sharpener

sharpen

verb
  1. to make or become sharp or sharper
  2. music to raise the pitch of (a note), esp by one chromatic semitoneUsual US and Canadian word: sharp
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Derived Formssharpener, noun
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 sharpener

n.

1630s, agent noun from sharpen.

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sharpen

v.

1520s, "bring to an edge or point," from sharp (adj.) + -en (1). Related: Sharpened; sharpening. Old English verb scearpian meant "to score, scarify;" cf. scearpung "scarifying." To sharpen (one's) pencil "prepare to get to work" is from 1957, American English.

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Online Etymology Dictionary, © 2010 Douglas Harper