1allow the existence, occurrence, or practice of (something that one dislikes or disagrees with) without interference:a regime unwilling to tolerate dissent
accept or endure (someone or something unpleasant or disliked) with forbearance:how was it that she could tolerate such noise?
2be capable of continued subjection to (a drug, toxin, or environmental condition) without adverse reaction:lichens grow in conditions that no other plants tolerate