bloviators

Example:He often attracts windbags in his seminars, a term for speakers or writers who speak at length without delivering meaningful ideas.

Definition:People who talk a lot about unimportant or irrelevant matters; someone who is considered to be boasting in speech, especially in a self-important way.

Example:The conference was blessed with blatherskites, making it a season of bloviating.

Definition:Informal term for someone who speaks or writes in a boring, tedious, or pompous manner; a windbag-speaker or writer; a person who is full of empty talk.

Example:The assembly was dominated by eggheads and bloviators, making it hard for practical representatives.

Definition:An informal term for a person of usually high intelligence, who often appears aloof, bookish, or pedantic; it is often used to describe someone who is considered to be too much of a theoretician or not practical.