The Collaborative International Dictionary
Missishness
Missish \Miss"ish\, a. Like a miss; prim; affected; sentimental. [1913 Webster] -- Miss"ish*ness, n.
Wiktionary
missishness
n. The quality of being missish.
Usage examples of "missishness".
Now, according to Mr Herriot you are a sensible girl, who will do your duty, as you have been doing since my father brought you into his house, and will spare me all missishness I might otherwise acquire.
It told him how determined she was to see him as her soon-to-be husband--no missishness there.
She is eight and twenty, or thereabouts, so she has quite put missishness behind her.