высокопро́бный

adjective

1.
high-quality, high-grade, sterling, high-standard
Он пи́шет высокопро́бную про́зу.
He writes high-quality prose.
Figurative use, often of art, work or humour.
2.
of high fineness, high-carat, high-grade (metal)metallurgy
Кольцо́ сде́лано из высокопро́бного зо́лота.
The ring is made of high-grade gold.
Of gold or silver: containing a high proportion of the pure metal.

Declension