murky

The causal relationships are somewhat murky — for example, people with lower incomes may succumb more to diseases of despair like substance use disorder or overeating.

He knew he would be upsetting some of those who benefit from the murky status quo when the $20bn project began.

Herders scooping murky water from a small pond in grasslands in South Sudan are well aware of the dangers they face if they drink it.

The situation is even murkier when it comes to invertebrates like shrimp, squid and octopus.

While the relative costs are clear, the issue of safety is murkier.