Being temperate is a desirable trait that refers to staying calm and restrained in situations that may trigger extreme emotions or reactions. Some antonyms for the word temperate include impetuous, reckless, and thoughtless - all of which describe a lack of self-control or restraint. An impetuous person acts hastily, without much thought or consideration for the consequences, while a reckless individual takes unnecessary risks without regard for potential harm. Finally, someone who is thoughtless may act carelessly without considering the feelings or consequences for others. While being temperate is considered socially and emotionally responsible, these antonyms highlight a disregard for such values.