Antonyms of adj ebullient

1 sense of ebullient

Sense 1
ebullient, exuberant, high-spirited -- (joyously unrestrained)

INDIRECT (VIA spirited) -> spiritless -- (lacking ardor or vigor or energy; "a spiritless reply to criticism")

Similarity of adj ebullient

1 sense of ebullient

Sense 1
ebullient, exuberant, high-spirited -- (joyously unrestrained)
       => spirited (vs. spiritless) -- (displaying animation, vigor, or liveliness)