THICK is validvalid

having relatively great extent from one surface to its opposite [adj THICKER, THICKEST] : THICKLY [adv], THICKNESS [n] / the thickest part [n THICKS]

13,700 of 196,601 in NWL2023·also valid in CSW24

having a great distance in measurement from surface to surface in the lesser dimension [adj THICKER, THICKEST, THICKLY] / (Spenser) to make thick [v -ED, -ING, -S]