What is the meaning of Pontificate?

The status or term of office of a pontiff or pontifex.

To preside as a bishop, especially at mass.

To act like a pontiff; to express one's position or opinions dogmatically and pompously as if they were absolutely correct.

To speak in a patronizing, supercilious or pompous manner, especially at length.

inflection of pontificare:

1. second-person plural present indicative
2. second-person plural imperative

second-person plural present indicative

second-person plural imperative

feminine plural of pontificato

second-person singular voseo imperative of pontificar combined with te

Source: wiktionary.org