keeps one's nose to the grindstone (verb) keep one's nose to the grindstone: work doggedly
Sinonime: aboriginal, autochthonous,
belonging,
endemic,
from, homegrown, homemade,
indigenous, inland,
internal, local, municipal, national,
original,
primary,
primeval,
primitive, regional,
related, vernacular
Antonime: foreign,
outside