So bad or unpleasant that it cannot be endured or accepted; unbearable.
From Latin 'in-' (not) plus 'tolerabilis' (able to be tolerated), from 'tolerare' (to endure). The word entered English in the 15th century as abstract thought about acceptable limits became more important in philosophy and ethics.
Intolerable' is historically powerful—the American Declaration of Independence lists 'intolerable acts' as the reason for revolution, showing how this word bridges personal suffering and political upheaval in a single concept.
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