Pontificate
to speak in a pompous/overbearing way, or in a patronizing, supercilious manner, especially at length
to preside as a bishop, especially at mass
to act like a pontiff, express one’s position/opinions dogmatically as if they were absolutely correct/official
authoritative decree, administer a pontifical office, the government of the Roman Catholic Church
make pretentious or categorical statement
declaim, dogmatize, expatiate, expound, hold forth, lay down the law, lecture, moralize, mouth off, perorate, preach, preachify, pronounce, sermonize, sound off, spiel, spout (off)
Opposite: deprecate, drain
Etymology: from…