Denshi Jisho — Online Japanese dictionary

水田 すいでん (water-filled) paddy field
Common word, Noun 
出納 すいとう receipts and expenditure (disbursements)
Common word, Noun, Suru verb 
水稲 すいとう wet-land rice
Common word, Noun 
水筒 すいとう canteen; flask; water bottle; thermos
Common word, Noun 
水道 すいどう water service; water supply
Common word, Noun 
水爆 すいばく hydrogen bomb
Common word, Noun, No-adjective, Abbreviation 
水分 すいぶん moisture
Common word, Noun 
水平 すいへい level; horizontality
Common word, Na-adjective, No-adjective 
水泡 すいほう 1: foam; bubble;
2: nothing
Common word, Noun 
睡眠 すいみん sleep
Common word, Noun, No-adjective 
水面 すいめん water's surface
Common word, Noun 
水曜 すいよう Wednesday
Common word, Adverbial noun, Noun 
推論 すいろん inference; deduction; induction; reasoning
Common word, Noun, Suru verb, No-adjective 
数学 すうがく mathematics; arithmetic
Common word, Noun 
崇高 すうこう loftiness; sublimity; nobility
Common word, Noun, Na-adjective 
枢軸 すうじく axle; pivot
Common word, Noun 
数日 すうじつ few days
Common word, Noun 
崇拝 すうはい worship; adoration; admiration; cult
Common word, Noun, Suru verb 
数万 すうまん tens of thousands
Common word, Noun, No-adjective 
末広 すえひろ folding fan
Common word, Noun 
筋道 すじみち reason; logic; thread; method; system
Common word, Noun 
砂浜 すなはま sandy beach
Common word, Noun 
即ち すなわち that is; namely; i.e.
Common word, Adverb, Conjunction, Usually written using kana alone 
隅々 すみずみ nooks; corners
Common word, Noun 
住友 すみとも Sumitomo (company)
Common word, Noun 
鋭い するどい 1: sharp (blade); pointed;
2: sharp (pain); stabbing; cutting (remark); stinging; pointed (question or look); screeching (noise);
3: perceptive; keen; quick (mind); astute; shrewd; discerning;
4: nimble; agile; quick
Common word, Adjective 

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