The phrase "be in a lather" is commonly used to depict someone who is agitated or upset, often to the point of being unable to think clearly. There are several synonyms for this phrase that can be used interchangeably, such as "be in a tizzy," "be in a frenzy," "be in a fluster," "be in a panic," and "be in a state." These expressions reflect the same emotional turmoil and restlessness that the phrase "be in a lather" conveys. So next time you want to describe someone who is distressed or overwhelmed, you can choose among any of these alternatives, depending on your preference.