From <span class="searchmatch">goofish</span> + -ness. <span class="searchmatch">goofishness</span> (uncountable) The quality of being <span class="searchmatch">goofish</span>....
goofy (“silly, quirky”). 2000, Kevin Bache, By No One's Leave, page 169: Dave then appeared as he was mimicking a <span class="searchmatch">goofish</span> walk of some kind. <span class="searchmatch">goofishness</span>...
make a mistake to engage in mischief goof around goofball goofer goofery <span class="searchmatch">goofish</span> goof off goof-off goof on goofproof goof up goofus goofy Fogo, fogo...