研ぐ · godan verb (-gu)
| Form | Positive | Negative |
|---|---|---|
| Dictionary | 研ぐ | 研がない |
| Polite | 研ぎます | 研ぎません |
| Past polite | 研ぎました | 研ぎませんでした |
| Past | 研いだ | 研がなかった |
| Te-form | 研いで | 研がないで |
| Desire | 研ぎたい | 研ぎたくない |
| Potential | 研げる | 研げない |
| Passive | 研がれる | 研がれない |
| Causative | 研がせる | 研がせない |
| Causative passive | 研がせられるalso 研がされる | 研がせられないalso 研がされない |
| Volitional | 研ごう | |
| Polite volitional | 研ぎましょう | |
| Imperative | 研げ | 研ぐな |
| Conditional | 研げば | 研がなければ |
| Tara conditional | 研いだら | 研がなかったら |
godan verb (-gu), transitive verb
Transitive verb for making a blade, point, claw, or similar edge sharp, often by using a whetstone or abrasive. 研ぐ is the usual spelling; 砥ぐ highlights the whetstone/sharpening nuance.
My father sharpened the kitchen knife with a whetstone.
The cat is sharpening its claws on the post.
godan verb (-gu), transitive verb
wash rice
Used specifically for washing rice by rubbing the grains in water before cooking. This sense as especially associated with 磨ぐ, though 米を研ぐ is also a very standard spelling.
Wash the rice before putting it in the rice cooker.
godan verb (-gu), transitive verb
scour; polish; burnish
Used when rubbing or abrading a surface to clean it, smooth it, or bring out a shine. Compared with 磨く, this often suggests a more abrasive or craft-like process.
The craftsman polished the metal surface until it had a mirror-like finish.
I sharpened the knife before cutting the vegetables.
I washed the rice for dinner.
I polished the mirror until it gleamed.
My father was sharpening the sickle with a whetstone.
The cat is sharpening its claws on the post.
knife grinder; sword sharpener; polisher