Free living is a term that is generally used to describe a carefree lifestyle, characterized by a lack of obligations or restrictions. As such, antonyms for this phrase might include terms that connote a sense of constraint, responsibility, or obligation. For example, words like "encumbered," "restricted," or "regulated" might all describe an opposite lifestyle to free living. Other antonyms could include words related to adherence to societal norms or expectations, such as "conventional," "routine," or "disciplined." Ultimately, the antonym of free living will depend on the specific connotations and associations that are desired, as well as the context in which the phrase is being used.