obviator
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Related to obviator: rarefy, forestalled
ob·vi·ate
(ŏb′vē-āt′)tr.v. ob·vi·at·ed, ob·vi·at·ing, ob·vi·ates
To keep from happening or render unnecessary. See Synonyms at prevent.
[Latin obviāre, obviāt-, to hinder, from obvius, in the way; see obvious.]
ob′vi·a′tion n.
ob′vi·a′tor n.
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.
obviator
(ˈɒbvaɪˌeɪtɔː)n
a person who obviates
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014