Antonyms for the phrase "threw into a tizzy" include "calmed," "soothed," "relaxed," "settled," and "composed." These words signify a state of tranquility and peacefulness, rather than the chaotic and frenzied state implied by "threw into a tizzy." Other antonyms to use may be "steadied," "stabilized," "collected," or "grounded." These words imply a sense of balance and control, rather than the sense of being unbalanced and out of control that comes with a tizzy. It's important to know these antonyms so you can express yourself more accurately and identify the type of emotion you are feeling.