Capstick rhymes with:
slapstick, chopstick, dipstick, lipstick, slapstick, broomstick, candlestick, chopstick, dipstick, joystick, lipstick, nightstick, pitstick, slapstick, yardstick
Capstick sounds like:
capacities, chappaquiddick, chopstick, chopsticks, copycats, copycodes