The antonyms of “moment” can be considered as words that represent extended periods of time or permanence.
One possible antonym is “eternity”. While a moment is a brief span of time that passes quickly, eternity implies an infinite or unending duration. For example, “In a moment, the firework exploded, but the concept of eternity is beyond our comprehension.”
Another antonym could be “permanence”. A moment is fleeting and transitory, whereas permanence suggests something that lasts indefinitely. “The beauty of a moment is ephemeral, but the idea of permanence gives us a sense of stability.”
“Duration” can also be an antonym. Moments are short-lived, but duration refers to a length of time. “A moment of hesitation can be overcome, but a long duration of indecision may lead to missed opportunities.”
In essence, while “moment” represents a brief instant, its antonyms convey the ideas of long-lasting time, unending existence, or extended periods.