quicksand
quick|sand /kw'ɪksænd/ (quicksands)
1 [N-UNCOUNT] also N in pl
Quicksand is deep, wet sand that you sink into if you try to walk on it.
The sandbank was uncertain, like quicksand under his feet.
2 [N-UNCOUNT] also N in pl
You can refer to a situation as quicksand when you want to suggest that it is dangerous or difficult to escape from, or does not provide a strong basis for what you are doing.
The research seemed founded on quicksand.
1 [N-UNCOUNT] also N in pl
Quicksand is deep, wet sand that you sink into if you try to walk on it.
The sandbank was uncertain, like quicksand under his feet.
2 [N-UNCOUNT] also N in pl
You can refer to a situation as quicksand when you want to suggest that it is dangerous or difficult to escape from, or does not provide a strong basis for what you are doing.
The research seemed founded on quicksand.