To disagree or express disagreement; to withhold assent or approval from something.
From dis- (expressing negation) + assent (from Latin assentire, meaning to agree). This is an extremely rare synonym for 'dissent,' which is a much more common alternative.
'Disassent' is so rare that most English speakers have never encountered it—'dissent' completely took over this meaning, showing how one word sometimes wins out over logical alternatives in natural language evolution.
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