There are several antonyms for the word "abstrusenesses", which refers to the quality of being obscure, difficult to understand, or incomprehensible. Some opposite words for abstrusenesses include clarity, simplicity, lucidity, transparency, and straightforwardness. These terms relate to the opposite concept of something being easy to understand, clear, and uncomplicated. A piece of writing or a speech that lacks abstrusenesses is more accessible to a wider audience, as it communicates its message in a concise and coherent way. Overall, identifying and using antonyms for a word like "abstrusenesses" can help to enhance one's vocabulary and communication skills.