treacherously

• Adverbe signifiant 'd'une manière liée à la trahison ou à la tromperie' ou 'd'une manière dangereusement instable ou imprévisible'. Décrit des actions accomplies avec déloyauté, ou des situations qui semblent sûres mais sont en réalité dangereuses.

An adverb meaning 'in a manner that is guilty of betrayal or deception' or 'in a way that is dangerously unstable or unpredictable.' It describes actions performed with disloyalty or situations that appear safe but are actually hazardous.

1. In a deceitful or disloyal mannerC1formal

   Acting in a way that betrays trust or is dangerously deceptive.

   de manière traîtresse

   • He treacherously revealed the secret to the enemy.
   • She was treated treacherously by her closest ally.
   • The spy acted treacherously against his own country.

   Synonymesdeceitfullydisloyallyfaithlesslyinsidiouslyperfidiouslytraitorouslytreasonably

   Antonymesfaithfullyhonestlyloyallytruthfully

2. In a dangerously unstable mannerC1formal

   In a way that is hazardous or unpredictable, often referring to physical conditions.

   de manière dangereusement instable

   • The road wound treacherously along the cliff edge.
   • The ice on the lake was treacherously thin.
   • The weather turned treacherously cold overnight.

   Synonymesdangerouslyinsecurelyperilouslyprecariouslyriskily

   Antonymesreliablysafelysecurelystablysteadily