I know it's not an english word, but need to justify it. I've already researched Ubiquitous, and know it's the manner of being everywhere at once. But, I want to know for sure how adding -um as a suffix affects the word. And what manner can I use it?

Thanks so much in advance!

The suffix "-um" is sometimes ised to make the noun form of a word, whereas -ous is the adjective form. Thus a "continuum" is a noun using the same root as "continuous," and "vacuum" is a noun form of "vacuous." But you can't just apply this to any adjective that ends in -ous; Engliush is not like German where you can just put parts together to make up a new word. The noun form of "uniquitous" is actually "ubiquitousness." If you used the word "ubiquituum" thinking it's the same as "uniquitousness" you would not be understood.