Word/Phrase: insidious
Translation: insidioso
Pronunciation: ɪnˈsɪd.i.əs
The insidious nature of the disease was alarming - La naturaleza insidiosa de la enfermedad era alarmante
He had an insidious plan to take over the company - Tenía un plan insidioso para apoderarse de la empresa
The insidious effects of the propaganda were felt by many - Los efectos insidiosos de la propaganda fueron sentidos por muchos
It was an insidious trap that he fell into - Era una trampa insidiosa en la que cayó
They faced an insidious threat that was hard to detect - Enfrentaron una amenaza insidiosa que era difícil de detectar