иностранных

иностранных

"Foreign."

The word 'иностранных' is used as an adjective in its genitive plural form, modifying the noun 'языков' which means 'languages', to indicate their foreign origin.

Я изучаю грамматику иностранных языков.

I study the grammar of foreign languages.

In this sentence, 'иностранных' is an adjective in its genitive plural form describing 'художников' (artists), implying that the artists are from abroad.

Мы посетили выставку иностранных художников.

We visited an exhibition of foreign artists.

Here 'иностранных' modifies 'режиссёров' (directors) and is in the genitive plural form, characterizing them as foreign.

Он часто смотрит фильмы иностранных режиссёров.

He often watches movies by foreign directors.