unbearable

adj. insoportable, inaguantable, insufrible, invivible

insufrible

Ex: Books are the best friends a man can have because they are loyal at a time when a man is unbearable to himself and his fellow human beings.

(adj.) = insoportable, inaguantable, insufrible, insostenible
Ex: Books are the best friends a man can have because they are loyal at a time when a man is unbearable to himself and his fellow human beings.
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* unbearable situation = situación insoportable, situación insostenible, sinvivir