| Sai |
three-pronged metal weapon |
| Saiki tanden |
belly an inch or so below navel hara |
| Sakotsu |
collarbone |
| Sakotsu shuto uchi |
collarbone knife-hand strike |
| Samurai |
literally one who serves bushi |
| San |
three |
| Sandan |
third degree black belt |
| Sankyu |
third grade |
| Sasae |
propping supporting |
| Sasae tsurikomi ashi |
propping drawing ankle throw |
| Seiza |
traditional sitting position on knees |
| Sempai |
senior |
| Sensei |
teacher |
| Seoi |
shoulder |
| Shiai |
contest |
| Shichi |
seven |
| Shichidan |
seventh degree black belt |
| Shichikyu |
seventh grade |
| Shihan |
master or senior instructor |
| Shiho |
four directions |
| Shiho nage |
four-direction throw |
| Shime |
choke strangle |
| Shioku waza |
nerve technique |
| Shittsui geri |
knee-hammer kick |
| Shizen-tai |
natural posture |
| Shodan |
1st degree black belt |
| Sode |
sleeve |
| Sode otoshi |
sleeve-hold knee-drop throw |
| Soke |
headmaster of a martial arts system |
| Soto |
outside outer |
| Soto makikomi |
outer wrap-around throw |
| Sukui |
scoop up |
| Sukui nage |
scooping throw |
| Sumi |
corner |
| Sumi gaeshi |
corner reversal throw |
| Sutemi waza |
self-sacrificing techniques |