YAMA - Mountain.

YOKO - Side (e.g. yokosutemiwaza - a sacrifice throw with the attacker falling onto his side in order to execute the technique).

YOSHI - Carry on. A referee's instruction to contestant to carry on with the contest.

YOWAI - Weak.

YUBI - Finger or toe.

YUKO - A score, almost waza-ari (score value of 5 points).

YUSEIGACHI - A win by superiority.