1) Anon 1) At once 2) In a direct course 3) Straightaway 
• (adv.) Immediately; without loss of time; without delay.
Straight'way` adverb Immediately; without loss of time; without delay. « He took the damsel by the hand, and said unto her, Talitha cumi. . . . And straightway the damsel arose.» Mark v. 41,42. 
[adv] - at once 2. [adv] - in a direct course
adverb in a direct course; `plunged straightway to the rocks below`
straightaway.