“DULLISH” is a valid word. — 11 points Scrabble

hillsa local and well-defined elevation of the land
shilla decoy who acts as an enthusiastic customer in order to stimulate the participation of others
hullsdry outer covering of a fruit or seed or nut
dullsmake dull in appearance
dillsaromatic Old World herb having aromatic threadlike foliage and seeds used as seasoning
hilus(anatomy) a depression or fissure where vessels or nerves or ducts enter a bodily organ

hilla local and well-defined elevation of the land
disha piece of dishware normally used as a container for holding or serving food
dullmake dull in appearance
hulldry outer covering of a fruit or seed or nut
lusha person who drinks alcohol to excess habitually
slidmove obliquely or sideways, usually in an uncontrolled manner
dillaromatic Old World herb having aromatic threadlike foliage and seeds used as seasoning
lidseither of two folds of skin that can be moved to cover or open the eye
sillstructural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure
illsan often persistent bodily disorder or disease; a cause for complaining
shul
sildany of various young herrings (other than brislings) canned as sardines in Norway

ishave the quality of being; (copula, used with an adjective or a predicate noun)
usNorth American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
uh
hian expression of greeting
ida state in the Rocky Mountains
lia soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
sia tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
sh

DULLISH