Meaning

noun a self-righteous or sanctimonious person

noun a member of an ancient Jewish sect noted for strict obedience to Jewish traditions

originFrom Latin Pharisaeus, from Ancient Greek Φαρισαῖος (Pharisaîos), a transliteration of Aramaic פְּרִישַׁיָּא (pərîšayyâ’), emphatic plural of פְּרִישׁ (pərîš, “separatist”, literally “separated”), related to Hebrew פרוש (parush), qal passive participle of the verb פָּרַשׁ (pāraš), meaning one who is separated for a life of purity.

Etymology from Wiktionary, CC BY-SA 3.0