offspin

/AO1 F S P IH1 N/
noun
  1. 1

    A style of bowling in which a (right-handed) bowler spins the ball such that, after pitching, it moves from off to leg (for a right-handed batsman).

Antonyms

Source: https://en.wiktionary.org/wiki/off%20spin, https://en.wiktionary.org/wiki/offspin