Which word means to put up with something or somebody unpleasant?

The word "brook" means to tolerate or allow something, particularly when it involves enduring something unpleasant. It often carries a connotation of facing a challenging situation with patience and acceptance. In this context, it captures the essence of enduring or accommodating something that is not favorable or agreeable.

While "tolerate" and "endure" also convey similar meanings, "tolerate" emphasizes allowing something to occur without interference, and "endure" suggests lasting through something difficult. "Support" implies providing assistance or backing, which does not align with the notion of putting up with unpleasantness. Therefore, "brook" is the most fitting choice for the idea of enduring something undesirable.