Grunt adjectives are listed in this post. Each word below can often be found in front of the noun grunt in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing GRUNT.
angry, deep, disgusted, guttural
inarticulate, little, loud, low
muffled, noncommittal, occasional, pained
satisfied, short, slight, small
Hope this word list had the adjective used with grunt you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.