stubbornly unyielding

with obstinate determination

tenaciously unwilling or marked by tenacious unwillingness to yield

A tenacious, diligent, or persistent person, An article of merchandise which sticks by the dealer and does not meet with a ready sale, plural The arms of a crank-axis employed to change the plane and direction of a reciprocating motion, verb_ To apply one or more stickers to (something), To mark as the sticker price, adjective_ nonstandard, informal comparative form of stick_ more stick (stickier)

Refusing to give up or let go; persevering obstinately, Inclined to persist; having staying qualities; tenacious of position or purpose, Obstinately refusing to give up or let go