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tr.v. re·strained, re·strain·ing, re·strains
a. To hold back or keep in check; control: was able restrain his emotions.
b. To prevent (a person or group) from doing something or acting in a certain way: She was restrained from selling the house by her fond memories.
2. To hold, fasten, or secure so as to prevent or limit movement: hair restrained by a bandana; a child restrained by a seat belt.

[Middle English restreinen, from Old French restraindre, restreign-, from Latin restringere, to bind back; see restrict.]

re·strain′a·ble adj.
re·strain′ed·ly (-strā′nĭd-lē) adv.
re·strain′er n.
Synonyms: restrain, curb, check, bridle, inhibit
These verbs mean to hold back or keep under control. Restrain implies restriction or limitation, as on one's freedom of action: "a wise and frugal government, which shall restrain men from injuring one another" (Thomas Jefferson).
To curb is to restrain as if with reins: "As a teacher he was rather dull. He curbed his own enthusiasms, finding that they distracted his attention" (E.M. Forster).
Check implies arresting or stopping, often suddenly: "Knowing that Lily disliked to be caressed, she had long ago learned to check her demonstrative impulses toward her friend" (Edith Wharton).
To bridle is often to hold in or govern one's emotions or passions: I tried hard to bridle my anger. Inhibit usually connotes a check on one's actions, thoughts, or emotions: A fear of strangers inhibited his ability to travel.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. a person who restrains
2. (Photography) a chemical, such as potassium bromide, added to a photographic developer in order to reduce the amount of fog on a film and to retard the development
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.restrainer - a chemical that is added to a photographic developer in order to retard development and reduce the amount of fog on a film
chemical, chemical substance - material produced by or used in a reaction involving changes in atoms or molecules
potassium bromide - a white crystalline salt (KBr) used as a sedative and in photography
2.restrainer - a person who directs and restrains
individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do"
nazi - derogatory term for a person who is fanatically dedicated to, or seeks to control, some activity, practice, etc.
overcomer, subduer, surmounter - someone who overcomes and establishes ascendancy and control by force or persuasion
suppresser, suppressor - someone who suppresses; "dictators are suppressors of free speech"
withholder - a person who restrains or checks or holds back
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
Side by side, again, with war and love, appears in the romances medieval religion, likewise conventionalized and childishly superstitious, but in some inadequate degree a mitigator of cruelty and a restrainer of lawless passion.
The animals were placed in a restrainer which has an opening for the tails.
"It's going on roller coasters and being able to pull the restrainer down without any fuss and trying my shoelaces without any issues.
After pre-conditioning, rats were subjected to heat treatment at 35 [+ or -] 2[degrees]C in a plastic restrainer and a cuff with a pneumatic pulse sensor was attached to the tail.
(c) Rat was restrained for 1~2 min in a rat restrainer for pressure stimulation on carrageenan-induced paw edema.
A second potential driver or restrainer on the regrowth of Sunni insurgency in Iraq is the support (or lack thereof) of the population for militant resistance activities.
Birds were manually restrained for the measurements in an upright, vertical position; gentle pressure was applied by the restrainer's knees around the torso and wings of the penguin, whereas the hands were used to hold the penguin's beak and to apply gentle pressure at the occipital base of the skull (Fig 1).
The U.S.-manufactured swings, which come with a T-shaped restrainer with the Little Tikes Logo across the front, are attached to four yellow ropes.
During recent earthquakes in China, the damage of middle and small span girder bridges included mainly girders falling, bearings sliding, collision of the adjacent girders in the expansion joint, and restrainer or abutment damage.
During the experiments, the animals were exposed to two types of stress: shaker stress, with rats positioned on a platform shaking at 200 cycles/min, and restraint stress, with rats placed in a Plexiglas restrainer tube (ID 5.5 cm with pores) in the supine position, with a detailed description given in [24].