DictionaryRoot: tolerare
Latin
tolerare
to bear, endure
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adjective
intolerable
in-TAH-ler-uh-bul/ɪnˈtɑːlərəbl/
Too unpleasant or painful to endure.
Etymology
Tolerare meant both “bear” and “endure”; with the capability ending and negative in-, the word means “cannot be borne.” It describes unpleasantness or severity beyond someone's capacity to endure.