untroubled
Word family
- untroublinglyadverbC1
- troublenounA2
- troubleverbA2
- troubledadjectiveB1
- troublesomeadjectiveB2
- troublemakernounB2
Synonym discussion
Sense: adjective/2
All four describe a state of calmness, but they differ in register and typical use. 'Untroubled' is the most neutral of the four — it simply means free from disturbance or worry. 'Serene' carries a more elevated, almost spiritual sense of clarity and composure; it is often used for someone's expression or a beautiful landscape ('a serene smile'). 'Tranquil' emphasizes stillness and quietness, especially of a place ('a tranquil village'). 'Placid' is narrower: it mainly describes the smooth, unrippled surface of water ('a placid lake') or a person's temperament ('a placid dog'). For a general description of inner calm, 'untroubled' fits best; for describing a peaceful natural scene, 'tranquil' or 'serene' may sound more natural to a native speaker.
Common collocations
Etymology
Formed in English by adding the prefix 'un-' (meaning 'not') to the adjective 'troubled', which comes from Old French 'troubler' (to disturb or stir up), ultimately from Latin 'turbulare' (to disturb, throw into disorder), related to 'turba' (turmoil, crowd). The sense of inner peace and outward calm developed in Middle English.