| 水 | みず | water (esp. cool or cold); fluid (esp. in an animal tissue); liquid; flood | n5 |
| 水面 | すいめん | water's surface | n2 |
| 清水 | しみず | spring water; clear (pure) water | |
| 洪水 | こうずい | flood; flooding | |
| 水晶 | すいしょう | (rock) crystal; high purity quartz | n1 |
| 水道 | すいどう | water supply; water service; waterworks; tap water | n3 |
| 水中 | すいちゅう | underwater | n1 |
| 水平 | すいへい | horizontal; level; even | n1 |
| 水色 | みずいろ | light blue; pale blue; aqua | |
| 水泳 | すいえい | swimming | n4 |
| 水準 | すいじゅん | level; standard; water level | n2 |
| 香水 | こうすい | perfume; scent | n2 |
| 湖水 | こすい | lake; lake water | |
| 水上 | すいじょう | on the water; aquatic; waterside; water's edge | |
| 水音 | みずおと | sound of water | |
| 水車 | すいしゃ | water wheel; water turbine; hydraulic turbine; violent wielding of weapons | |
| 海水 | かいすい | seawater; saltwater | n2 |
| 水底 | すいてい | bottom of the water; bottom of the sea; river bottom | n1 |
| 山水 | さんすい | mountain and water; landscape (containing hills and rivers); landscape picture; mountain stream | |
| 水戸 | みと | Mito (city in Ibaraki) | |
| 水田 | すいでん | (water-filled) paddy field | |
| 冷水 | れいすい | cold water | n2 |
| 水分 | すいぶん | water; liquid; fluid; moisture | n2 |
| 水蒸気 | すいじょうき | water vapour; water vapor; steam | n1 |
| 水際 | みずぎわ | water's edge; waterside; shore; before coming ashore | |
| 手水 | てみず | water for washing or moistening one's hands | |
| 噴水 | ふんすい | water fountain | |
| 水夫 | すいふ | sailor; seaman | |
| 海水浴 | かいすいよく | swimming in the ocean; sea bathing; seawater bath; going for a dip in the ocean | n2 |
| 水気 | みずけ | water content; moisture; juiciness; dampness | |
| 水銀 | すいぎん | mercury (Hg) | |
| 水草 | みずくさ | water plant; aquatic plant; waterweed; hydrophyte | |
| 水素 | すいそ | hydrogen (H) | |
| 水仙 | すいせん | daffodil (esp. Narcissus tazetta var. chinensis); narcissus | n2 |
| 水族館 | すいぞくかん | aquarium (building) | n3 |
| 泉水 | せんすい | garden pond; miniature lake; fountain | n1 |
| 行水 | ぎょうずい | tub bath; washing oneself in a tub; taking a bath in a washtub; cleaning oneself for religious purification | |
| 泥水 | どろみず | muddy water; red-light district | |
| 水兵 | すいへい | (naval) sailor | n1 |
| 下水 | げすい | drainage; ditch; gutter; sewerage | n1 |
| 水鳥 | みずとり | waterfowl; water bird; shorebird | |
| 水辺 | みずべ | water's edge; waterside; shore | n1 |
| 出水 | しゅっすい | flood; freshet; inundation | |
| 水路 | すいろ | waterway; canal; channel; watercourse | |
| 雨水 | あまみず | rain water; "rain water" solar term (approx. February 19) | n1 |
| 潜水 | せんすい | diving; submerging; going underwater | n1 |
| 水量 | すいりょう | quantity or volume of water | n1 |
| 水産 | すいさん | aquatic products; fisheries | |
| 河水 | かすい | river water; stream | |
| 風水 | ふうすい | feng shui; fengshui; wind and water | |
| 水源 | すいげん | source of river; fountainhead | |
| 水門 | すいもん | sluice gate; water gate; flood gate | |
| 水力 | すいりょく | hydraulic power; water power | |
| 水たまり | みずたまり | puddle; pool of water | n1 |
| 水曜日 | すいようび | Wednesday | n5 |
| 水筒 | すいとう | canteen; flask; water bottle; thermos | n3 |
| 用水 | ようすい | irrigation water; water for fire; city water; cistern water | |
| 水の泡 | みずのあわ | bubble on the surface of water; (coming to) nothing; naught; something short-lived | |
| 水彩 | すいさい | watercolor painting | |
| 水口 | みずぐち | spout | |
| 農林水産省 | のうりんすいさんしょう | Ministry of Agriculture, Forestry and Fisheries; MAFF | |
| 流水 | りゅうすい | running water; flowing water; stream | |
| 大水 | おおみず | flood | |
| 水槽 | すいそう | water tank; cistern; fish tank; aquarium | n1 |
| 水曜 | すいよう | Wednesday | |
| 水流 | すいりゅう | water current | |
| 水滴 | すいてき | drop of water; vessel for replenishing inkstone water | |
| 水煙 | みずけむり | mist over a body of water; spray; suien; four decorative metal plates joined at right angles forming part of a pagoda finial | |
| 水害 | すいがい | water damage; flood disaster | |
| 防水 | ぼうすい | waterproofing; making watertight | n1 |
| 水泡 | すいほう | foam; bubble; nothing | |
| 水死 | すいし | death by drowning | |
| 浸水 | しんすい | inundation; submersion; flood | n1 |
| 水盤 | すいばん | shallow bowl for displaying flowers, bonsai, etc. | |
| 水入らず | みずいらず | (being) among close family or friends only; private (gathering of intimates) | |
| 水浴 | すいよく | a bath; bathing | |
| 水茶屋 | みずぢゃや | (Edo-period) roadside teahouse where one would go to relax (in comparison with a restaurant style teahouse and teahouse offering sexual services) | |
| 水天 | すいてん | water and sky; Varuna; Vedic god of water and sky (adopted into Buddhism as god of water and protector of the west) | |
| 水臭い | みずくさい | stand-offish; distant; not frank; reserved | |
| 水際立つ | みずぎわだつ | to be splendid; to be superb | |
| 水着 | みずぎ | bathing suit; swimsuit; swimmers | n1 |
| 水脈 | すいみゃく | water vein; underground stream of water; waterway | |
| 入水 | じゅすい | suicide by drowning; drowning oneself; entering the water; hitting the water | |
| 水神 | すいじん | a water god | |
| 水嵩 | みずかさ | volume of water (in a river, pond, flood, etc.) | |
| 水引 | みずひき | decorative Japanese cord made from twisted paper; Antenoron filiforme; Polygonum filiforme | |
| 塩水 | しおみず | salt water; brine | |
| 水火 | すいか | fire and water; flooding and fire | n5 |
| 水勢 | すいせい | force of water (current, stream, jet, etc.) | n1 |
| 水瓶 | みずがめ | water jug | |
| 水温 | すいおん | water temperature | n1 |
| 天水 | てんすい | rain water | |
| 雲水 | うんすい | itinerant priest; wandering monk; mendicant; clouds and water | |
| 淡水 | たんすい | fresh water (i.e. not salt water) | |
| 水菓子 | みずがし | jelly dessert; fruit | |
| 水深 | すいしん | depth of water | n1 |
| 水玉 | みずたま | drop of water; polka dots | |
| 炭水化物 | たんすいかぶつ | carbohydrate | |
| 打水 | うちみず | sprinkling water (to keep down dust, cool pavements, etc.) | n2 |
| 春水 | しゅんすい | spring water (from melting snow) | |