Which preposition to use with gravis

es Occurrences 1%

"Cum se cutis arida laxat, Fiunt obscuri dentes" when they wax old, and ill-favoured, they may commonly no longer abide them,Jam gravis es nobis, Be gone, they grow stale, fulsome, loathsome, odious, thou art a beastly filthy quean,faciem Phoebe cacantis habes, thou art Saturni podex, withered and dry, insipida et vetula,Te quia rugae turpant, et capitis nives, (I say) be gone, portae patent, proficiscere.

in Occurrences 1%

Consilia interdum stetit egnia[021] mente revolvens: At gravis in densa fronde susuffrus[022] erat, Spiculaque[023]

Which preposition to use with  gravis