The phrase "most squirrelly" refers to being unpredictable, erratic, skittish or nervous. Some possible antonyms for "most squirrelly" are calm, composed, collected, steady or reliable. To express the opposite of squirrelly, one could use words such as peaceful, tranquil, serene, consistent or confident. Squirrelly behavior might be associated with anxiety, fear or agitation, while its antonyms point to a state of stability, assurance, and relaxation. Antonyms provide a way to clarify emotions or actions by contrasting their opposite qualities. By using antonyms, speakers or writers can convey different shades of meaning and create a richer language experience.