The phrase "invest with" refers to putting money, time, or energy into something or someone with the expectation of a return. Synonyms for this phrase include "back," "support," "put money into," "bet on," or "commit to." When individuals invest with something or someone, they devote resources and effort towards achieving a common goal. This could include investing with a business partner, investing with a friend, or investing with a particular cause or organization. Overall, investing with someone or something requires trust, shared goals, and a commitment to collaborative effort towards success.