Unhailed is not a frequently used word, but there are several synonyms that convey a similar meaning. These words include unacknowledged, unappreciated, unnoticed, and unheralded. Unacknowledged implies a lack of recognition or credit for one's actions or contributions. Unappreciated suggests that something was not valued or recognized for its worth. Unnoticed refers to something that was not observed or paid attention to. Unheralded implies that something was not announced or celebrated, despite its significance. These synonyms can help to clarify the meaning of unhailed and provide alternative ways to express the same idea.