treacherous

Describes someone or something that is guilty of betrayal or deception; also used to describe ground or conditions that are hazardous or unstable.

ruОписывает кого-то или что-то, виновное в предательстве или обмане; также используется для описания местности или условий, которые являются опасными или нестабильными.esDescribe a alguien o algo culpable de traición o engaño; también se usa para referirse a un terreno o condiciones que son peligrosas o inestables.frDécrit quelqu'un ou quelque chose qui est coupable de trahison ou de tromperie ; également utilisé pour décrire un terrain ou des conditions qui sont dangereux ou instables.deBeschreibt jemanden, der Verrat begeht oder betrügerisch handelt; ebenso verwendet für gefährliche oder unzuverlässige Orte oder Bedingungen.ptDescreve alguém ou algo culpado de traição ou engano; também é usado para descrever terrenos ou condições perigosas ou instáveis.zh形容某人或某事物有背叛、欺骗性质的；也用于形容危险、不稳定、不可靠的地方或情况。arيصف شخصًا أو شيئًا متصفًا بالخيانة أو الغدر؛ ويُستخدم أيضًا لوصف أرض أو ظروف خطرة أو غير مستقرة.

1. Dangerously unstable or unpredictable B2 formal

   Describes a situation, condition, or surface that is hazardous due to instability or hidden dangers.

   • The mountain path became treacherous after the heavy rain.
   • Driving on icy roads is extremely treacherous.
   • The sea was calm, but the currents were treacherous.

   ruОпасныйespeligroso, traicionerofrdangereusement instable ou imprévisibledeGefährlichptTraiçoeirozh危险的arخطير وغير مستقر

   Synonyme: dangerousdeceptivediceyhazardousinsidiousperilousprecariousriskyshakytrickyunpredictableunreliableunsafeunstablevolatile

   Antonyme: predictablereliablesafesecurestable

2. Betraying trust or faith C1 formal

   Having a tendency to betray; deceitful and untrustworthy, often used historically to describe a person's character.

   • The treacherous advisor secretly plotted against the king.
   • He was known for his treacherous behavior in business dealings.
   • The Romans often described the Carthaginians as treacherous.

   ruВероломныйesTraidorfrTraître, déloyaldeVerräterischptTraiçoeirozh背信弃义arخائن

   Synonyme: deceitfuldisloyaldouble-dealingfaithlessfalseperfidioustraitoroustreasonousunfaithfuluntrustworthy

   Antonyme: dependablefaithfulhonestloyaltruetrustworthy

• more treacherous comparative form
• most treacherous superlative form