This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Extending in a straight line or course without a curve or turn.

adj. Unhesitating; immediate: a straightaway denial.

n. A straight course, stretch, or track.

ad. At once; immediately.

n. A straight section of a racetrack.

ad. At once; immediately.

adj. extending into the distance in a straight line.

Straight forward, without turn or curve: as, a straightaway course in a yacht- or horse-race.

n. A race-course which is without turn or curve; also a race which is run without turning or curving.

ad. without delay or hesitation; with no time intervening

n. a straight segment of a roadway or racecourse

adj. performed with little or no delay

"You want to go out and play again straightaway to put things right."

fast   

Christiania    runout    ten-mile    100-yard    waddling    skimmers