To engage in joyful activity in appreciation of an event.
To perform or participate in, as a sacrament or solemn rite; to perform with appropriate rites.
To extol or honour in a solemn manner.
To honour by rites, by ceremonies of joy and respect, or by refraining from ordinary business; to observe duly.
To exhibit a conspicuous (sometimes malevolent) pleasure or sense of self-satisfaction, often at an adversary's misfortune.
To triumph, crow, relish, glory, revel.
An act or instance of gloating.