ebullient
cheerful and full of energy
Roots
- bull / boil: bubble, boil, or swell up
- e- / ex-: out, out of, away, or forth
Other words with the bull / boil root
Ebullient feeling boils out; energy bubbles over instead of staying contained.
Her ebullient greeting lifted the exhausted room.
Boil gives the physical motion. Ebullient adds e-/ex-: feeling boils out until it shows as bright energy.