volumy

An adjective synonymous with "voluminous" used only in the Japanese dialect of English to describe a large helping of food. In Japan, those who want to be intelligent-sounding (but actually aren't) tend to use this "adjective."
Note that, when pronounced, the stress is put on "-lu-" not "vo-", which is against the general rule of English pronunciation.

"Wow, how volumy this steak is!"

Volumy

Voluminous

It was a volumy lunch.