Ous!
1. a suffix forming adjectives that have the general sense “possessing, full of” a given quality ( covetous; glorious; nervous; wondrous ); -ous, and its variant -ious, have often been used to Anglicize Latin adjectives with terminations that cannot be directly adapted into English ( atrocious; contiguous; garrulous; obvious; stupendous). As an adjective-forming suffix of neutral value, it regularly Anglicizes Greek and Latin adjectives derived without suffix from nouns and verbs; many such formations are productive combining forms in English, sometimes with a corresponding nominal combining form that has no suffix; Compare -fer, -ferous; -phore, -phorous; -pter, -pte.
Covetous; – Covet – to want ardently; (Ardent) (Something that another person has).
In Martial Arts – "possessing" or being "full of" the want for knowledge and education of the art.
Ardent: Passionate; zealous, glowing or burning; to be passionate, zealous & glowing when learning your art; so, when you answer “Ous” you are letting the other person of the following know your current understanding – as any of the stated above words by saying
"Ous!"