incoherent

Adjective

• unable to express yourself clearly or fluently
  • felt tongue-tied with embarrassment
    
  • incoherent with grief
    

• (physics) of waves having no stable definite or stable phase relation

• without logical or meaningful connection
  • a turgid incoherent presentation
    

Related words

• Antonyms: 
  coherent , consistent , logical , ordered