Straightaway rhymes with:
castaway, getaway, hataway, piscataway, breakaway, broadaway, caraway, carraway, castaway, connaway, donaway, dunaway, gallaway, gasaway, getaway, giveaway, greenaway, hardaway, hataway, hathaway, hideaway, holdaway, laraway, layaway, piscataway, rockaway, runaway, throwaway, treadaway
Straightaway sounds like:
satirist, scattergood, scattershot, sidetracked, soderquist, starched, stargate, starkist, starsight, straight, streaked, streight, stressed, strict, strikeout, stroked