attentiveness

Noun

• the trait of being observant and paying attention

• the trait of being considerate and thoughtful of others

• paying particular notice (as to children or helpless people)
  • his attentiveness to her wishes
    
  • he spends without heed to the consequences
    

Related words

• Synonyms: 
  heed , regard , paying attention
• Antonyms: 
  inattentiveness , heedlessness