opposing
adjective
[ əˈpəʊzɪŋ ]
• in conflict or competition with someone or something.
• "the opposing team"
• facing; opposite.
• "on the opposing page there were two addresses"
oppose
verb
• disagree with and attempt to prevent, especially by argument.
• "a majority of the electorate opposed EC membership"
Origin:
late Middle English: from Old French opposer, from Latin opponere (see opponent), but influenced by Latin oppositus ‘set or placed against’ and Old French poser ‘to place’.
