straightaway

a straight segment of a roadway or racecourse

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!”

performed with little or no delay

• “an immediate reply to my letter”
• “prompt obedience”
• “was quick to respond”
• “a straightaway denial”