不忌 is an adjective meaning 'not taboo' or 'no restriction', most commonly used in health-related contexts—especially regarding diet and traditional medicine. The character 不 (bù) means 'not', and 忌 (jì) means 'to avoid', 'to forbid', or 'taboo', often referring to foods, activities, or substances one should avoid for medical reasons. Together, 不忌 indicates that something is permissible or safe to consume or do, even when restrictions might otherwise apply.

This term frequently appears in doctor’s advice, herbal prescriptions, or dietary guidelines—for example, telling a patient that certain foods are 'not forbidden' during recovery. It carries a reassuring, permissive tone and implies compatibility with one’s condition or treatment. While it can occasionally appear in non-medical contexts (e.g., cultural practices), its overwhelming usage centers on health and wellness, particularly where traditional Chinese medicine principles influence daily habits.