The phrase "consign to grave" implies the act of disposing of something or someone into the earth after death. Antonyms for this phrase might include "resurrection," "rebirth," or "revival," which signify life or a return to existence after death. Alternative phrases that could be used instead of "consign to grave" might include "honor the memory," "celebrate their legacy," or "eternal rest," which take a more positive approach to remembering someone who has passed away. Ultimately, the antonyms for "consign to grave" reflect a desire to focus on the positive aspects of someone's life, rather than their passing.