To overload or overtax

(geology) The rock and subsoil that lies above a mineral deposit such as a coal seam. / (archaeology) A sterile stratum that lies above the stratum being investigated

plural of overburden

Third-person singular simple present indicative form of overburden

Excessively burdened

simple past tense and past participle of overburden

present participle of overburden

Too burdensome.

(archaic) third-person singular simple present indicative form of overburden

So as to overburden.