to use downright; to use up, consume; to make an unrestrained use of, use eagerly, 1 Cor. 7:31; to use to the full, stretch to the utmost, exploit, 1 Cor. 9:18*
under the earth, subterranean; this may refer to the dead as a class of people, which generally are regarded as inhabiting the underworld. It is likely a more general term than the specific names for the abode of the dead: Hades, Gehenna, Tartaros, etc.
