| OCD | Diagnosis characterized by repetitive behavior, in brief |
| ADHD | Cause of some impulsive behavior, in brief |
| EXTRAVAGANZA | In Italian, with a variant spelling, it refers to bizarre, overindulgent, or eccentric behavior. In English, it means an elaborate entertainment. The first known usage in English was in 1754. |
| TENNISELBOW | Malady caused by repetitive motion |
| HABIT | Repetitive behavior pattern |
| KINSEY | "Sexual Behavior in the Human Male" author |
| AGGRO | Violent behavior, in British slang |
| ETHOLOGY | The study of animal behavior in their natural habitats |
| CODACONDUCT | Musicians' behavior, in the end? |
| PDA | Unlawful behavior in strict Muslim countries, for short |
| ETHOLOGIST | One studying animals' behavior in their natural habitats |
| ANT | Model of good behavior in Proverbs |
| RAGEQUIT | Exhibit "take this video game and shove it" behavior, in slang |
| SOCIALNORM | Acceptable behavior in a community |
| RSI | Muscular-skeletal system injury caused by repetitive actions such as using a keyboard or mouse (1,1, |
| TECHNECK | Informal term for a condition caused by repetitive muscle strain from using laptops etc (4,4) |
| STRESSFRACTURE | Surfer actress teased over the first bone crack caused by repetitive strain (6,8) |
| OMEN | Something interpreted from a bird's behavior, in the ancient Greek practice of ornithomancy |
| DHARMAS | Virtuous behaviors, in Hinduism |
| NONOS | Discouraged behaviors in society |
