See more synonyms for deter on Thesaurus.com verb (used with object), de·terred, de·ter·ring.
- to discourage or restrain from acting or proceeding: The large dog deterred trespassers.
- to prevent; check; arrest: timber treated with creosote to deter rot.
Origin of deter
1570–80;Related formsde·ter·ment, nounde·ter·ra·ble, adjectivede·ter·ra·bil·i·ty, nounde·ter·rer, nounun·de·ter·ra·bil·i·ty, nounun·de·ter·ra·ble, adjectiveun·de·ter·ra·bly, adverbun·de·terred, adjectiveun·de·ter·ring, adjective
< Latin dēterrēre
to prevent, hinder, equivalent to dē- de-
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for undeterring
verb -ters, -terring or -terredDerived Formsdeterment, noun
- (tr) to discourage (from acting) or prevent (from occurring), usually by instilling fear, doubt, or anxiety
C16: from Latin dēterrēre, from de- + terrēre to frighten
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for undeterring
1570s, from Latin deterrere "to frighten from, discourage from," from de- "away" (see de-) + terrere "frighten" (see terrible). Deterrent is from 1829.
Online Etymology Dictionary, © 2010 Douglas Harper