“+ adjective
Etymology: Latin superincumbent-, superincumbens, present participle of superincumbere to lie down on top of, from super- + incumbere to lie down on — more at incumbent
1. : lying or resting on something else especially so as to exert pressure
superincumbent layers of living and dead plants cut off the air and arrested decomposition — F.D.Smith & Barbara Wilcox
2. : pressing heavily : burdensome
3. of pressure : coming from above
• superincumbently adverb