DictionaryintemperateLack of restraint
adjective

intemperate

in-TEM-per-ut/ɪnˈtempərət/

Lacking moderation or self-control.

The intemperate diner pounds the table over a tiny tea spill.

A visibly disproportionate tantrum over a tiny tea spill: one seated companion pounds the table and shouts while the other quietly dabs the puddle and recoils.
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

Storytime Haven90:12
“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!”
Kim by Rudyard Kipling 📚✨ | A Tale of Adventure and Espionage in India

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.