obstinate

/ˈɒb.stɪ.nət/

adjective

Meaning

Stubbornly adhering to an opinion, purpose, or course, usually with implied unreasonableness; persistent.
Said of inanimate things not easily subdued or removed.

Synonyms

inexorable,

persistent,

unrelenting,

bloody-minded,

persistent,

pertinacious,

stubborn