If you won’t take no for an answer, you’re pertinacious. The same holds true if you stubbornly push on a door despite a sign that says “pull.” Pertinacious means unyielding or perversely persistent.

Pronunciation: /,pɝtn'eʃəs/
English description: stubbornly unyielding
Synonyms: dogged
Chinese Translation: 顽固的(wan2 gu4 de)
Spanish Translation: pertinaz
ORIGIN: We get pertinacious from the Latin pertinx, which combines per-"thoroughly" with tenx "tenacious." You can impress your friends by dropping pertinacious into conversation when referring to anyone who is bullheaded and obstinately stuck in their ways and opinions. If a Girl Scout is a pertinacious salesperson you might buy fifty boxes of Thin Mints when you only wanted one.

EXAMPLE SENTENCE:

The museum’s functionaries—from floor-polishing janitors to pertinacious scholars and fantastically skilled restorers—emerge as the film’s heroes.
It cost Philip fifty liras and nearly all the Italian he knew to get rid of the pertinacious and ingenious fellow.

*New word description, story and part of "EXAMPLE SENTENCE" are cited in Vocabulary.com