What is synonym of Serene (پر سکون)? A) Turmoil B) Calm and Peaceful C) Rough D) None of these Related MCQs: The synonym of “Halcyon”(سکون) is? Select the Antonym of the word: Tranquil (سکون) Choose the opposite meaning of “Tranquil” (سکون): Which UN agency works for population?