important

Adjective

• having or suggesting a consciousness of high position
  • recited the decree with an important air
    
  • took long important strides in the direction of his office
    

• having authority or ascendancy or influence
  • an important official
    
  • the captain's authoritative manner
    

• of extreme importance; vital to the resolution of a crisis
  • a crucial moment in his career
    
  • a crucial election
    
  • a crucial issue for women
    

• important in effect or meaning
  • a significant change in tax laws
    
  • a significant change in the Constitution
    
  • a significant contribution
    
  • significant details
    
  • statistically significant
    

• of great significance or value
  • important people
    
  • the important questions of the day
    

Related words

• Synonyms: 
  authoritative , crucial , significant , of import
• Antonyms: 
  noncrucial , insignificant , unimportant