adjective
intemperate
in-TEM-per-ut/ɪnˈtempərət/
Lacking moderation or self-control.
The intemperate diner pounds the table over a tiny tea spill.

Etymology
To moderate was to keep something within proper measure or limits. Negating the resulting idea of being restrained gives excessive indulgence, whether in appetite, emotion, or expression.
In context
“is impolite to strangers, intemperate of speech and uncharitable. Be warned by his demeanour, my disciple.” “Ho, shameless beggars!” shouted the farmer. “Begone! Get hence!”
More examples
- She regrets the intemperate tone of her email.
- His intemperate spending leaves little money for rent.
- Years of intemperate drinking take a toll on his health.
Forms
intemperate
intemperance noun — Lack of moderation or self-control.
intemperately adverb — In a manner lacking moderation or restraint.
Similar words
- immoderate
- Emphasizes exceeding reasonable limits, rather than losing self-control.
- unrestrained
- Means unchecked or uninhibited, without necessarily implying harmful excess.
- excessive
- Describes too much of something, not necessarily uncontrolled behavior.