unctuosity

Although soft to the touch, the common clay wants unctuosity, properly so called.

What he has missed is dignity: his pitfalls have been unctuosity, on the one side, bravado on the other.

It has in part the unctuosity of bees' wax, and somewhat of the brittleness of resin.

If they be but heated so as to boil, they become acrid, lose much of their unctuosity, and acquire a very pungent odour.