Tuning out is a common behavior that people display when they are disinterested or bored with something. Synonymous expressions for the term "tune out" include "zone out," "space out," or "daydream." These phrases describe the state where someone's attention has shifted towards other thoughts or activities. Other similar expressions include "ignore" or "block out," where the individual has chosen not to engage with what is happening around them. Additionally, "drown out" suggests that the person is attempting to silence the noise of their environment by focusing on something else. Regardless of the expression used, tuning out is a common behavior that people display to cope with stress, boredom, or discomfort.