The phrase "out of element" means feeling uncomfortable or incompetent in a particular situation. To express the opposite meaning, antonyms for "out of element" might include phrases such as "in one's element," "comfortable," "confident," "competent," "skilled," "adept," "expert," or "familiar." These words describe a sense of ease, familiarity, or mastery over a particular situation or task. When someone is "in their element," they are likely to perform well and feel a sense of satisfaction with their work or activity. By contrast, feeling out of element can be frustrating, demoralizing, or even humbling.