superincumbent

adjective

su·​per·​in·​cum·​bent ˌsü-pər-in-ˈkəm-bənt 

: lying or resting and usually exerting pressure on something else

superincumbently adverb

Word History

Etymology

Latin superincumbent-, superincumbens, present participle of superincumbere to lie on top of, from super- + incumbere to lie down on — more at incumbent

First Known Use

1664, in the meaning defined above