v. To work against; oppose; especially to incite reaction.
the GNU version of the Collaborative International Dictionary of English
v. To contend with; to oppose actively; to counteract.
verb-intransitive. To act in opposition.
The Century Dictionary and Cyclopedia
To act in opposition to; oppose; counteract; hinder.
To act antagonistically or in opposition.
Also spelled antagonise.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. provoke the hostility of
v. act in opposition to
Word Usage
"If he does not reply promptly he must pay a forfeit or he must pay a forfeit if he uses a word which would show disloyalty to his country such as antagonize it, abhor it, etc. etc."