words on ous
Above site gives most of all existing words ending on ous.

In stead of always asking I've found my way to find things since I came here almost two years ago.
A continuing problem though is 'words ending on ous'.
There are those on ous, eous, ious and uous. Most of the time I have to double check if I've done it right. Is there a memory help or a system for this matter?

f.i.: with aeneous and acrogenous both following an n, one is :eous , the other ous. (?)