tenacious

/təˈneɪʃəs/

adjective

Meaning

Clinging to an object or surface; adhesive.
Unwilling to yield or give up; dogged.
Holding together; cohesive.
Having a good memory; retentive.

Synonyms

clingsome,

sticky,

elephantlike,

memorious,

coherent,

pigheaded,

steadfast