Full of energy, cheerfulness, and positivity; able to float or remain afloat.


US English

UK English

Part of speech



Cheerful, optimistic, energetic, lively, lighthearted


Depressed, sad, heavyhearted, sunken, weighed down

Example sentences:

  • The buoyant sales numbers suggested that the company was doing well.
  • The buoyant mood of the party was contagious, spreading cheer to all who attended.
  • The buoyant raft remained afloat on the calm lake, its passengers enjoying the sun and scenery.


The word “buoyant” comes from the French word “bouyant,” which means “floating.” The root word “buoy” means “an object that floats on water to mark a location.” Someone who is buoyant is characterized by their ability to stay afloat or remain positive in difficult situations. This word is often used to describe someone who has a resilient and optimistic attitude, even in the face of adversity.