(transitive) To keep under or in subjection; subdue; suppress. / (transitive) To keep or maintain inadequately or below standard.

An underground reserve. / A keep or storage space located beneath the foundation of a structure; cellar. / Any storage space or reservoir placed below another object.

plural of underkeeper

(obsolete) A subordinate keeper or guardian.

present participle of underkeep

Third-person singular simple present indicative form of underkeep

plural of underkeep