improper

Adjective

• not appropriate for a purpose or occasion
  • said all the wrong things
    

• not conforming to legality, moral law, or social convention
  • an unconventional marriage
    
  • improper banking practices
    

• not suitable or right or appropriate
  • slightly improper to dine alone with a married man
    
  • improper medication
    
  • improper attire for the golf course
    

Related words

• Synonyms: 
  wrong , unconventional , unlawful