Furtiveness and Soporific

Furtiveness noun - A disposition to be sly and stealthy and to do things surreptitiously.

Soporific and furtiveness are semantically related. In some cases you can use "Soporific" instead an adjective "Furtiveness".

Soporific adjective - Tending to cause sleep.

Furtiveness and soporific are semantically related. Sometimes you can use "Furtiveness" instead an adjective "Soporific".