argument
US /ˈɑːrɡ.jə.mənt/
UK /ˈɑːrɡ.jə.mənt/

1.
an exchange of diverging or opposite views, typically a heated or angry one
:
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They had a fierce argument about politics.
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I don't want to have an argument with you.
2.
a reason or set of reasons given with the aim of persuading others that an action or idea is right or wrong
:
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He presented a strong argument for his proposal.
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Her main argument was that the cost was too high.