pontification

Example:The professor's pontificating on the unimportance of the topic only made the students more bored and disengaged.

Definition:the act of pontificating, or delivering a long, formal, and often pompous or pretentious lecture or speech; also refers to behaving in a pompous or pretentious manner

Example:The pontificators at the annual conference were criticized for their lack of practical experience.

Definition:those who pontificate, especially in a formal or pompous manner

Example:His pedantic pontification on why this historical fact is so important bored the students to tears.

Definition:pompous, precise, and often needlessly learned or scholarly speech or writing