The antonyms for the phrase "were delirious" include being calm, collected, sane, sensible, stable, and composed. These words are used to describe a state of mind that is characterized by clarity, coherence, and rationality. When we talk about a person who is calm or composed, we refer to someone who is in control of their emotions and can think clearly. On the other hand, when we say someone is delirious, we usually describe someone who is confused, agitated, and disoriented. It is essential to recognize these antonyms to understand better the spectrum of emotions that humans can experience in different situations.