That's what I thought - fibrato might be an alternative spelling - but can't find any evidence of it spelled like that.
Leaves us with a gap for F - I thought of one last night, but it's slipped my mind for the moment.
Looking things up is allowed, as long as the following 'rules' (from the OP) are followed = No double posting (or googling) unless there has been nothing posted for at least 24hrs. Be as inventive as you like!
Of course! I was struggling with that one - best I could come up with was Jack Frost, who used to draw beautiful patterns on the inside windowpanes of my unheated bedroom in the 1950s.
In compete contrast: