The antonyms for the word "keeping in existence" include several words that indicate the opposite of maintaining or sustaining. Some of these antonyms can be described as destroying, eliminating, eradicating, or obliterating. Alternatively, other antonyms for "keeping in existence" can express a sense of neglect, abandonment, or disregard for something's preservation, such as ignoring, neglecting, or forsaking. The antonyms for this phrase can be used to convey a sense of loss, destruction, or decline, as well as to suggest the importance of active efforts to preserve or sustain something that might otherwise be at risk of disappearing or being destroyed.