spurious
Pronunciation:
/ˈspjʊə.ɹi.əs//ˈspjɔ.ɹi.əs/adjective
Definitions
False, not authentic, not genuine.
Example: His argument was spurious and had no validity.
Extraneous; stray; not relevant or wanted.
Example: I tried to concentrate on the matter in hand, but spurious thoughts kept intruding.
Bastardly, illegitimate