Princeton's WordNet

1. precarious, unstable(adj)

   affording no ease or reassurance

   "a precarious truce"

2. parlous, perilous, precarious, touch-and-go(adj)

   fraught with danger

   "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery"

3. precarious, shaky(adj)

   not secure; beset with difficulties

   "a shaky marriage"

Wiktionary

1. precarious(Adjective)

   dangerously insecure or unstable; perilous

2. precarious(Adjective)

   depending on the intention of another

Origin: From precarius, from prex, precis. Compare French précaire and Spanish, Portuguese and Italian precario.

Webster Dictionary

1. Precarious(adj)

   depending on the will or pleasure of another; held by courtesy; liable to be changed or lost at the pleasure of another; as, precarious privileges

2. Precarious(adj)

   held by a doubtful tenure; depending on unknown causes or events; exposed to constant risk; not to be depended on for certainty or stability; uncertain; as, a precarious state of health; precarious fortunes

• gevaarlikAfrikaans
• غَيْر ثابِت أو مُسْتَقِرArabic
• несигуренBulgarian
• precárioPortuguese (BR)
• nejistý, riskantníCzech
• unsicherGerman
• usikker; risikabelDanish
• επικίνδυνος, επισφαλήςGreek
• precarioSpanish
• ebakindelEstonian
• مخاطره آمیزFarsi
• epävarmaFinnish
• précaireFrench
• לא בָּטוחַHebrew
• खतरनाक, अनश्चितHindi
• neizvjesan, kritičanCroatian
• bizonytalanHungarian
• berbahayaIndonesian
• ótryggur, tvísÿnnIcelandic
• precarioItalian
• 不安定なJapanese
• 불안정한, 위험한Korean
• nesaugus, rizikingasLithuanian
• apšaubāms; nedrošs; riskantsLatvian
• berbahayaMalay
• onveilig, riskantDutch
• usikker, farlig, prekærNorwegian
• ryzykownyPolish
• مخاطره آمیزPersian
• خطرناكPashto
• precárioPortuguese
• precarRomanian
• ненадёжный; рискованныйRussian
• neistý, riskantnýSlovak
• negotovSlovenian
• rizičanSerbian
• osäker, vansklig, prekär, farlig, riskabelSwedish
• ที่ไม่ปลอดภัยThai
• güvensiz, rizikoluTurkish
• 不安全的，充滿危險的，危險的Chinese (Trad.)
• ризикований; небезпечнийUkrainian
• غير محفوظ، مشتبہUrdu
• mong manh; hiểm nghèoVietnamese
• 不安全的，危险的Chinese (Simp.)