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underdone

[uhn-der-duhn] /ˈʌn dərˈdʌn/
adjective
1.
(of food) not thoroughly cooked; not cooked enough.
2.
Chiefly British. (of meat) rare.
Origin of underdone
1675-1685
1675-85; under- + done

underdo

[uhn-der-doo] /ˌʌn dərˈdu/
verb (used without object), verb (used with object), underdid, underdone, underdoing.
1.
to do less or in a lesser fashion than is usual or requisite.
Origin
1605-15; under- + do1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for underdone

underdone

/ˌʌndəˈdʌn/
adjective
1.
insufficiently or lightly cooked
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 underdone
adj.

1680s, in reference to cooked meat, from under + done.

Online Etymology Dictionary, © 2010 Douglas Harper
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Difficulty index for underdone

Few English speakers likely know this word

Word Value for underdone

11
14
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