Sentence:  The neighbor is eventually able to sell her home despite Homer's pants-less affronts to <WSD>propriety</WSD> and decency and Bart falls deeply and instantly for one of its new inhabitants, a tough but charming and funny tomboy girl named Laura (voiced by Sara Gilbert) with just the right combination of toughness and sweetness, granite and honey. 
Meaning of the word marked with <WSD> tags:  Correctness in behaviour and morals; good manners, seemliness. (from 19th c.)