Definitions for "Stubborn"
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.
tenaciously unwilling or marked by tenacious unwillingness to yield
not responding to treatment; "a stubborn infection"; "a refractory case of acne"