anything that accompanies X and is regarded as an indication of X's existence | behavior that breaches the rule or etiquette or custom or morality |
(medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease | not characterized by a fixed principle or rate; at irregular intervals |
| an irregular asymmetry in shape; an irregular spatial pattern |
| irregular and infrequent or difficult evacuation of the bowels; can be a symptom of intestinal obstruction or diverticulitis |