well, actually . . .

whelm tr.v. whelmed, whelm·ing, whelms
1. To cover with water; submerge.
2. To overwhelm.
the free online dictionary, but any decent dictionary should have it. obviously it's mostly fallen out of use, but it is a real term. just google it if you doubt me. ;p
I believe you, I was just curious. I use one look dictionary which connects to about a dozen different dictionaries online.