verb

• (transitive) To extol or honour in a solemn manner.
• (transitive) To honour by rites, by ceremonies of joy and respect, or by refraining from ordinary business; to observe duly.
• (intransitive) To engage in joyful activity in appreciation of an event.
• (transitive) To perform or participate in, as a sacrament or solemn rite; to perform with appropriate rites.