A slang word, typically used in place of dang-it, or that sucks, But it can be used in a wide variety of sentences. The root word, monkish, can be used as an adjective.
1.The bad grade I recieved in English caused me to hollar, "Monkishness!"
2. Gosh I can't standthat kid, he's so monkish.
Being so shocked and surprised that you stop everything you were doing. Often involves the puckering of the face as well.
What Anish said was so retarded that a feeling of mortishness washed over me. i couldn't continue reading my book, I had to acknowledge the stupidity of his statement, Y'know?