不安定(ふあんてい)

ふあんてい
na-adjective, noun
unstable, unsteady
descriptive
1. unstable, unsteady, insecure
Not firmly fixed, balanced, or reliable. Used for physical objects, weather, emotions, political situations, employment, and other conditions that may change unpredictably.
天気(てんき)が不安定(ふあんてい)だ。
The weather is unstable.
収入(しゅうにゅう)が不安定(ふあんてい)で将来(しょうらい)が心配(しんぱい)だ。
My income is unstable, and I'm worried about the future.
精神的(せいしんてき)に不安定(ふあんてい)な状態(じょうたい)が続(つづ)いていたので、病院(びょういん)を受診(じゅしん)した。
I had been in a mentally unstable state for a while, so I went to see a doctor.

Na-adjective formed by adding 不(ふ) (un-/in-) to 安定(あんてい) (stable). Describes anything that lacks stability or reliability.

Forms

  • 不安定(ふあんてい)な + noun: unstable ~
  • 不安定(ふあんてい)に + verb: unstably

Common collocations

Similar words

Related Words

Antonym: 安定(あんてい) (stability, steady)
Compare: 変(か)わりやすい (changeable)
general
Added 2026.2.16 7:42 · Revised 2026.9.2 13:01
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