1) to do something to show that (a day or an invent) is important or an occasion for rejoicing (celebrate)
pleased; causing or bringing happiness
happy, delightful
high spirits, satisfaction
high spirits, satisfaction
the sound made by as ass
laugh
attack(s) of hysteria
great joy
great pleasure or happiness
great happiness, pleasure
feeling, showing, great joy (especially at success)
happy
the act, sound, of laughing
amusement
the state of being merry, happy; happy laughter
great joy
(the joy or satisfaction at) a success or victory
extreme happiness