grandiloquent

Adjective

• puffed up with vanity
  • a grandiloquent and boastful manner
    
  • overblown oratory
    
  • a pompous speech
    
  • pseudo-scientific gobbledygook and pontifical hooey- Newsweek
    

• lofty in style
  • he engages in so much tall talk, one never really realizes what he is saying
    

Related words

• Synonyms: 
  overblown , pompous , pontifical , portentous , magniloquent , tall