The phrase "lump it" can sometimes feel a bit harsh or abrupt. If you're looking for a kinder, gentler way to express the same sentiment, there are a number of synonyms you can choose from. For example, you might say "grin and bear it," "take it in stride," or "accept it with grace." Other possibilities include "deal with it," "put up with it," or "tolerate it." Ultimately, the choice of which synonym to use will depend on the situation and your own personal style. The important thing is to communicate clearly and respectfully, no matter what language you choose to use.