How to say "insecure" in Japanese

• 物騒ぶっそうJLPT N2approx.Common
  na-adjective, nounCovers 'insecure' only in the sense of surroundings or circumstances being dangerous and unsettling, as in a rough neighborhood or troubled times. It describes an alarming state of affairs, not a person's anxious feelings.
  地震じしんの後あと、この辺あたりは物騒ぶっそうだ。↗

  After the earthquake the neighbourhood felt insecure.
• 不確実ふかくじつCommon
  na-adjective, nounCovers 'insecure' in the sense of uncertain or unreliable — information, evidence, or prospects that cannot be counted on. Its core is lack of certainty, so it suits facts and the future, not personal feelings.
  ネット上じょうの不ふ確実かくじつな情報じょうほうを鵜呑うのみにしてはならない。↗

  You mustn't swallow unreliable information that's on the Web.
• 危ういあやういJLPT N2approx.Common
  i-adjectiveCovers 'insecure' in the sense of a situation, balance, or state being precarious, in doubt, or in jeopardy. It paints things as perched on the brink, not people as lacking confidence.
  彼かれは今いま入院中にゅういんちゅうで、生いきられるかどうかは危あやうい状態じょうたいだ。↗

  He is now in the hospital and his life is in the balance.

For 'insecure' in the emotional sense none of these fits; use 物騒 for a dangerous, unsettled state of affairs, 不確実 for uncertainty or unreliability, and 「危うい」 for a precarious, at-risk situation.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 物騒ぶっそうdangerous
• 不確実ふかくじつuncertain
• 剣呑けんのんrisky
• 不用心ぶようじんunsafe
• 危ないあぶないuncertain
• 危ういあやういprecarious (situation)
• おぼつかないunreliable