A noun for “a great 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 luimë for other less intensive “flood” words.
Quenya
oloirë
great flood
oloirë
noun. great flood
ulundë
flood
ulundë noun "flood" (ULU), possibly in the sense of (great) river.% Cf. nuinë, oloirë.
luimë
flood
luimë noun "flood" (VT48:23, 30; the additional glosses "floodwater, flooded land" were struck out, VT48:30), "flood, high tide" (VT48:24, 30). According to VT48:30, partially illegible glosses in Tolkien's manuscript may also suggest that luimë can be used for any tide, or for the spring tide (the maximum tide just after a new or full moon).
lúto
flood
lúto noun "flood" (LT1:249)
oloirë noun "great flood" (VT42:10)