Plain truths are facts or statements that are simple, straightforward and uncomplicated. There are different synonyms for the term "plain truths" such as the truth of the matter, the reality of the situation, the basic facts, the unvarnished truth, the naked truth, the simple truth, the elementary principles, the fundamental facts, the real facts, the clear truth, and the stark reality. All these words and phrases convey the same meaning of expressing something without any pretense or exaggeration. It's important to understand these synonyms and use them effectively in your communication as they can help you express yourself with clarity and precision when discussing facts and truths.