Intemperate, meaning lacking in self-control, can be expressed through its antonyms. One such antonym is temperate, denoting a person who is moderate and self-restraining. Another antonym could be controlled or disciplined, reflecting someone who exercises caution and restraint in their behavior. Sensible is also an antonym for intemperate, depicting an individual who is rational and reasonable. Conversely, a person who is reckless or unbridled can be deemed intemperate. Finally, one may also use the antonym judicious, which suggests a person who exercises excellent judgment and prudence, to describe intemperate behavior.