Undaughterly is a word that refers to behavior or actions that are not appropriate or typical of a daughter. It can also imply that something is not in line with what is expected of a female child. Some synonyms for undaughterly include unfilial, disrespectful, disobedient, or insubordinate. These words suggest a lack of respect or adherence to family values or societal expectations. Other synonyms may include rebellious, unruly, defiant, or wayward. In any case, undaughterly behavior can be viewed as problematic or unacceptable in certain cultures or families, and may require remedial action or disciplinary measures.