straighten up

straighten

[streyt-n]
verb (used with object), verb (used without object)
to make or become straight in direction, form, position, character, conduct, condition, etc. (often followed by up or out ).

Origin:
1535–45; straight + -en1

straightener, noun
overstraighten, verb
prestraighten, verb (used with object)
restraighten, verb
unstraightened, adjective
well-straightened, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To straighten up
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World English Dictionary
straighten (ˈstreɪtən)
 
vb (sometimes foll by up or out)
1.  to make or become straight
2.  (tr) to make neat or tidy: straighten your desk
 
'straightener
 
n

straighten up
 
vb
1.  to become or cause to become erect
2.  chiefly (US) to reform or become reformed

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Idioms & Phrases

straighten up

Make tidy, as in Let's get this room straightened up. [Second half of 1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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