stagnant water; standing water
Water that has collected and remains still, often in a depression or container, and may become stale.
Stagnant water formed in the garden, and mosquitoes bred.
Stagnant water has collected in the old bucket.
Standard kanji spelling.
Mixed kana-kanji spelling; less common but still encountered.
Compound of 溜まり (noun form of verb 溜まる 'to accumulate') and 水 (water).