Fireball rhymes with:
butterball, powerball, arenaball, basketball, blackball, butterball, cannonball, eyeball, fastball, football, handball, hardball, meatball, mothball, oddball, pinball, powerball, racquetball, screwball, snowball, softball, spaceball, spitball, stickball, tidball, trackball, volleyball
Fireball sounds like:
favorable, favorably, fearful, firefly, foreplay, frable, fravel, freefall, friebel