Which preposition to use with unctuous

to Occurrences 2%

CREAMS.The yellowish-white, opaque fluid, smooth and unctuous to the touch, which separates itself from new milk, and forms a layer on its surface, when removed by skimming, is employed in a variety of culinary preparations.

in Occurrences 1%

The first called in was the elder, M. Anatole Lafolay, a true Parisian bourgeois, fat and comfortable, unctuous in speech, and exceedingly deferential.

with Occurrences 1%

Here are vast forests, unctuous with turpentine, annually producing pitch, tar, rosin, and ship-timber, with material for houses, boats, fuel, and lightwood, while the mossy drapery of the trees in suitable for pillows and cushions.

Which preposition to use with  unctuous