having the quality of a fribble;
frivolous, trifling, ridiculous ...1768
from fribble (n. a trifling, frivolous person) + -ish
FIRST DOCUMENTED USE
1768 - see EXAMPLE below
"...His windows are glazed with as much variety as a glazier's sign, but he has picked up a vast quantity of pretty old painted glass. His library is indeed as fribblish as himself, and so furnished with looking-glass that had it the property of representing to him his inside as well as outside, it might read him a better lesson than he could find in his whole collection of books, and shew him his own insignificancy..."
From: The Autobiography and Correspondence of Mary Granville, Mrs Delany
- Mary Delany