Noun

• S: (n) straightaway, straight (a straight segment of a roadway or racecourse)

Adjective

• S: (adj) immediate, prompt, quick, straightaway (performed with little or no delay) "an immediate reply to my letter"; "a prompt reply"; "was quick to respond"; "a straightaway denial"

Adverb

• S: (adv) immediately, instantly, straightaway, straight off, directly, now, right away, at once, forthwith, like a shot (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!"