Curtain-raiser is synonymous with an opening act, introduction, or prelude. There are various antonyms, or opposites, for this word depending on the context. For example, the closing act or closer, final performance, grand finale, or epilogue could be antonyms related to a theatrical performance. Conversely, antonyms could be a delayed start, postponed event, or latecomer if referring to a schedule or timeline. Other antonyms could include silence, lack of introduction, or abrupt beginning if considering a speech or presentation. Overall, understanding antonyms for curtain-raiser is crucial for effective communication and precise language use.