pompous
1. [ adjective ] puffed up with vanity
Synonyms: overblown pontifical portentous grandiloquent
Examples:

"a grandiloquent and boastful manner" "overblown oratory" "a pompous speech" "pseudo-scientific gobbledygook and pontifical hooey"- Newsweek

Related terms: pretentious
Similar spelling:   pompously
  pomposity