28 synonyms for phenomenon such as miracle, appearance, curiosity, and marvel. Phenomenon is a noun, and its antonyms are non-event and ordinariness.
Appearance, case, circumstance, episode, event, experience, fact, happening, incident, occurrence, sight, situation, and thing.
Curiosity, marvel, miracle, nonpareil, oner, prodigy, rarity, sensation, something else, something to shout about, something to write home about, spectacle, standout, and wonder.