surruo

sub-ruō (surr-) uī, utus, ere,

to tear away below, undermine, dig under, dig out, break down, overthrow, demolish: ab radicibus arbores, Cs.: subruti ruebant muri, L.: turrim, Cs.: arces et stantia moenia, O.—Fig., to undermine, subvert, corrupt: nostram libertatem, L.: Reges muneribus, H.