effervescing
AdjectiveWordNet 3.0
Webster's Dictionary (GCIDE)
Effervesce \Ef`fer*vesce"\, v. i. [imp. & p. p. Effervesced; p. pr. & vb. n. Effervescing.] [L. effervescere; ex + fervescere to begin boiling, incho., fr. fervere to boil. See Fervent.]
1.To be in a state of natural ebullition; to bubble and hiss, as fermenting liquors, or any fluid, when some part escapes in a gaseous form. [1913 Webster]
2.To exhibit, in lively natural expression, feelings that can not be repressed or concealed; as, to effervesce with joy or merriment. Effervescence