verb (used with object), reg·u·lat·ed, reg·u·lat·ing.

to control or direct by a rule, principle, method, etc.: to regulate household expenses.
to adjust to some standard or requirement, as amount, degree, etc.: to regulate the temperature.
to adjust so as to ensure accuracy of operation: to regulate a watch.
to put in good order: to regulate the digestion.

Origin of regulate

First recorded in 1620–30, regulate is from the Late Latin word rēgulātus (past participle of rēgulāre). See regula, -ate1
Related formsreg·u·la·tive [reg-yuh-ley-tiv, -yuh-luh-tiv] /ˈrɛg yəˌleɪ tɪv, -yə lə tɪv/, reg·u·la·to·ry [reg-yuh-luh-tawr-ee, -tohr-ee] /ˈrɛg yə ləˌtɔr i, -ˌtoʊr i/, adjectivereg·u·la·tive·ly, adverban·ti·reg·u·la·to·ry, adjectivemis·reg·u·late, verb (used with object), mis·reg·u·lat·ed, mis·reg·u·lat·ing.non·reg·u·lat·ed, adjectivenon·reg·u·la·tive, adjectivenon·reg·u·la·to·ry, adjectiveo·ver·reg·u·late, verb, o·ver·reg·u·lat·ed, o·ver·reg·u·lat·ing.pre·reg·u·late, verb (used with object), pre·reg·u·lat·ed, pre·reg·u·lat·ing.qua·si-reg·u·lat·ed, adjectivere·reg·u·late, verb (used with object), re·reg·u·lat·ed, re·reg·u·lat·ing.un·reg·u·lat·ed, adjectiveun·reg·u·la·tive, adjectiveun·reg·u·la·to·ry, adjectivewell-reg·u·lat·ed, adjective

Synonyms for regulate Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for unregulated

unchecked, uncontrolled, uncontrollable

Examples from the Web for unregulated

Contemporary Examples of unregulated

Historical Examples of unregulated

  • The freethinker is liable to the danger of an unregulated, dissolute life.

  • You have been yourself describing the influence of these unregulated likings.

  • They had begun to question the unregulated descent of favors from the top.

    Behind the Mirrors

    Clinton W. Gilbert

  • And I'd like to know what you mean, ma'am, by unregulated marriage.

    What Not

    Rose Macaulay

  • They remove from the performance all suggestions of unregulated caprice.

    Public Speaking

    Clarence Stratton

British Dictionary definitions for unregulated



not regulated; uncontrolled


verb (tr)

to adjust (the amount of heat, sound, etc, of something) as required; control
to adjust (an instrument or appliance) so that it operates correctly
to bring into conformity with a rule, principle, or usage
Derived Formsregulative or regulatory, adjectiveregulatively, adverb

Word Origin for regulate

C17: from Late Latin rēgulāre to control, from Latin rēgula a ruler
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 unregulated



early 15c., "adjust by rule, control," from Late Latin regulatus, past participle of regulare "to control by rule, direct," from Latin regula "rule" (see regular). Meaning "to govern by restriction" is from 1620s. Related: Regulated; regulating.

Online Etymology Dictionary, © 2010 Douglas Harper

unregulated in Medicine




To control or direct according to rule, principle, or law.
To adjust to a particular specification or requirement.
To adjust a mechanism for accurate and proper functioning.
To put or maintain in order.
Related formsregu•la′tive null adj.regu•la′tor n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.