How do you use frictitious in a sentence?

"Frictitious" is not a real word. It seems you might be thinking of "fictitious" or "frivolous".

Here are some examples of how you could use those words in a sentence:

Fictitious:

* "The detective uncovered the fictitious alibi the suspect had fabricated."

* "The author created a fictitious world full of magic and wonder."

Frivolous:

* "Her concerns about the color of the tablecloth were frivolous compared to the serious issues at hand."

* "He wasted his time on frivolous pursuits instead of focusing on his studies."