"Grass-Grown" is a word in ENGLISH

hilamonán - Overgrown with grass, grassland; fit for growing grass.

To fall or lie down, as grass or grain, when overgrown or beaten down by the wind.

masiók - (B) Dense, overgrown, junglelike, full of high grass or underbrush. (cf. siók).

Overstocked, or overgrown, or covered, with grass.

siók - (B) To be or become densely overgrown with shrubs, long grasses, etc. Nagsiók ang líbut sang dáan nga …

sulup a dark, lightless. Wà kuy nakítà sa lángub kay sulup kaáyu, I did not see anything in the cave …