belatedly

Adverb

• later than usual or than expected
  • the train arrived late
    
  • we awoke late
    
  • the children came late to school
    
  • notice came so tardily that we almost missed the deadline
    
  • I belatedly wished her a happy birthday
    

Related words

• Synonyms: 
  late , tardily
• Antonyms: 
  early , ahead of time , too soon