quicksand

باللغة العربية: رِمَال مُتَحَرِّكَة

1. Wet sand that appears firm but in which things readily sink, often found near rivers or coasts. (countable, uncountable) · My feet were firmly lodged in the quicksand, and the more I struggled the more I sank into it.
2. Anything that metaphorically pulls one down or buries one; a treacherous, risky danger (countable, figuratively, uncountable) · the quicksands of youth

الجمع quicksands