不ふ安あん定てい

ふ

あ

ん

て

い

Common wordJLPTN3Freq.FrequencyTop 10,000

Meanings

Describes physical, emotional, economic, or systemic lack of stability. The gloss 'crankiness' is a rare, informal extension for a person's mood.

〈事こと〉が不ふ安あん定ていになるfor something (a situation, economy, etc.) to become unstable
最さい近きん、経けい済ざいが不ふ安あん定ていになっている。
Recently, the economy has become unstable.
不ふ安あん定ていな〈事こと〉an unstable situation, condition, or state of affairs
不ふ安あん定ていな天てん候こうが続つづいている。
Unstable weather has been continuing.
〈人ひと〉は精せい神しん的てきに不ふ安あん定ていだsomeone is emotionally/mentally unstable
彼かれは最さい近きん、精せい神しん的てきに不ふ安あん定ていだ。
He has been emotionally unstable lately.
〈物もの〉が不ふ安あん定ていに揺ゆれるfor a physical object to sway or wobble precariously
その椅い子すは足あしが短みじかくて不ふ安あん定ていに揺ゆれる。
That chair has short legs and wobbles precariously.

不ふ確かく実じつ
不確実 emphasizes uncertainty or unpredictability (e.g., of outcomes), while 不安定 focuses on a lack of steadiness or firmness in a state or system.
心こころもとない
心もとない describes a vague feeling of insecurity or unease, while 不安定 more objectively describes an unstable condition or situation.
流りゅう動どう的てき
不安定 means 'unstable' and often carries a negative connotation of precariousness, whereas 流動的 is more neutral and simply describes a state of flux.
危あやういN2
不安定 describes something literally unstable or fluctuating (like prices or footing), while 危うい in this sense adds a sense of impending failure or collapse to that instability.
不ふ規き則そくN2
不安定 focuses on instability or precariousness, while 不規則 focuses on the absence of a predictable pattern or schedule.

安あん定ていN3
安定 means stable or steady, the direct opposite of 不安定, which describes a lack of stability.
コンスタント
不安定 means 'unstable/unsteady', the direct opposite of コンスタント's sense of remaining steady and unchanging.

不ふ安あんN3
不安 means anxiety or worry, a personal feeling, whereas 不安定 describes an objective lack of stability in a situation or system, not an emotion itself.

Compound of 不 (negative prefix) + 安定 (stability).