(へいぜん)

へいぜん
adjective-na
calm; nonchalant
1. calm; nonchalant; unperturbed
Remaining composed and unaffected in a situation where most people would be upset, embarrassed, or surprised. Often implies the calmness is surprising or somewhat inappropriate given the circumstances.
(かれ)平然(へいぜん)としていた。
He was perfectly calm.
(うそ)をついても平然(へいぜん)としている。
Even after lying, he acts completely nonchalant.
大勢(おおぜい)(まえ)失敗(しっぱい)したのに、平然(へいぜん)(はな)(つづ)けた。
Despite making a mistake in front of a large crowd, she continued speaking calmly.

Can be used as a na-adjective (平然(へいぜん)とした(かお)) or adverbially (平然(へいぜん)と). Often carries a nuance of surprise or criticism — the speaker finds the person's calmness unexpected or even inappropriate given the situation. When used negatively, it implies someone is shameless or unfazed when they should feel embarrassment or guilt.

COMMON PATTERNS:

  • 平然(へいぜん)としている: to be unperturbed, to act as if nothing happened
  • 平然(へいぜん)とした(かお): a calm/unfazed face
  • 平然(へいぜん)(うそ)をつく: to lie without batting an eye

SIMILAR WORDS:

  • 冷静(れいせい): calm, composed — neutral and positive; implies rational self-control
  • 泰然(たいぜん): composed, unruffled — literary and positive; implies admirable calmness
  • 平気(へいき): fine, unfazed — more colloquial; can mean "not bothered" or "okay with it"