straightaway

Adjective

• performed with little or no delay
  • an immediate reply to my letter
    
  • a prompt reply
    
  • was quick to respond
    
  • a straightaway denial
    

Adverb

• without delay or hesitation; with no time intervening
  • he answered immediately
    
  • found an answer straightaway
    
  • an official accused of dishonesty should be suspended forthwith
    
  • Come here now!
    

Noun

• a straight segment of a roadway or racecourse

Related words

• Synonyms: 
  immediate , prompt , quick , straight