The quality or state of being secure, security(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "secureness" in a sentence
"And right as in the first word that our good Lord shewed, signifying His blissful Passion, -- Herewith is the devil overcome, -- right so He said in the last word, with full true secureness, meaning us all: Thou shalt not be overcome."
"FLOCK: Give me a sense, general, of what your men will be doing today and what they have been doing in terms of secureness?"
"But there is no way in all the blue hells that I would do something so inane as to bet on that outcome, or somehow think that putting money on it is an indication of the secureness of my opinion in this matter."