Stubble :: Stubbiness (n.) The state of being stubby.
Stubbled :: Stubble (n.) The stumps of wheat, rye, barley, oats, or buckwheat, left in the ground; the part of the stalk left by the scythe or sickle..
Stubborn :: Stubbly (a.) Covered with stubble; stubbled.
Stubby :: Stubborn (a.) Firm as a stub or stump; stiff; unbending; unyielding; persistent; hence, unreasonably obstinate in will or opinion; not yielding to reason or persuasion; refractory; harsh; -- said of persons and things; as, stubborn wills; stubborn ore; a stubborn oak; as stubborn as a mule..