Assuming again refers to the act of making a presumption or taking something for granted without any solid evidence or proof. The antonyms for assuming again would, therefore, be words that describe a more cautious and investigative approach. Antonyms for assuming again include words such as verifying, confirming, substantiating, corroborating, investigating, and questioning. These words express the idea of taking the time to gather information and verify facts before jumping to conclusions or assuming things that may not be accurate. By using these antonyms, we can avoid making false assumptions and ensure we have a thorough understanding of the situation before taking any action.