At this Nell raised her finger and declared with great positiveness: "When I tell the King, he will carry everything."
"In Desert and Wilderness"
Henryk Sienkiewicz
That is to say, they were unable to determine with any degree of positiveness whether they were of noble extraction; their parents refused to inform them, and consequently they were deeply distressed, as you can well imagine.
"Eugene Field, A Study In Heredity And Contradictions"
Slason Thompson
Well, at least he hadn't stated with positiveness that there hadn't been and couldn't be.
"Eight Keys to Eden"
Mark Irvin Clifton