Quenya 

oloiya-

to inundate, flood

oloiya- vb. "to inundate, flood" (VT42:10)

oloiya-

verb. to inundate, flood

A verb for “to inundate, flood” appearing in notes on The Rivers and Beacon-hills of Gondor from 1967-69, an intensified form that was one of the few surviving Quenya derivatives of the root √LOG “wet (and soft), soaked, swampy”. See luita- for another less intensive “flood” verb.