The phrase "send to kingdom come" is a colloquial expression typically used to indicate extreme violence, destruction, or annihilation. Antonyms for this phrase might include "preserve," "protect," "preserve intact," "save," or "promote." In this context, these terms would suggest a desire to maintain, safeguard, or enhance something rather than completely destroying it. Other antonyms could refer to concepts like peace, harmony, or cooperation, such as "resolve," "unite," "reconcile," or "coexist." Ultimately, the antonyms for "send to kingdom come" would center on notions of peaceful resolution or preservation, rather than violent destruction.