stubborn
/ˈstʌbən/
noun
Meaning
Stubbornness.
A disease of citrus trees characterized by stunted growth and misshapen fruit, caused by Spiroplasma citri.
adjective
Meaning
Refusing to move or to change one's opinion; obstinate; firmly resisting; persistent in doing something.
"Blood can make a very stubborn stain on fabrics if not washed properly."
Of materials: physically stiff and inflexible; not easily melted or worked.
Synonyms