Meaning

verb behave as expected during of holidays or rites

verb have a celebration

verb assign great social importance to

originFrom Middle English celebraten, from celebrat(e) (“celebrated”, also used as the past participle of celebraten) + -en, borrowed from Latin celebrātus, perfect passive participle of celebrō (“frequent, go to in great numbers, celebrate, honor, praise”) (see -ate (verb-forming suffix)), from celeber (“frequented, populous”). Displaced native Old English fæġnian.

Etymology from Wiktionary, CC BY-SA 3.0