Pastime rhymes with:
christmastime, flextime, peacetime, airtime, alltime, anytime, bedtime, centime, christmastime, daytime, dinnertime, downtime, everytime, flextime, fulltime, funtime, halftime, lifetime, longtime, lunchtime, maritime, mealtime, meantime, movietime, nighttime, noontime, overtime, parttime, peacetime, primetime, quicktime, ragtime, schooltime, showtime, sometime, springtime, summertime, wartime, wintertime
Pastime sounds like:
paighton, pakistan, pakistani, pakistanian, pasadena, paustian, paxton, peacetime, pectin, pestana, picton, piston, pistone, poseidon, position, postema, posten, postino, postma, postman, poston, postum, pseudonym