Minacious is defined as threatening or menacing. Therefore, antonyms for this word would be adjectives that describe something as non-threatening or non-menacing. Words that can be used as antonyms for 'more minacious' include benign, friendly, innocuous, harmless, gentle, amicable, unthreatening, and non-threatening. For instance, if the original text states that a person's behavior became more minacious with each passing day, the antonym would be that the behavior was becoming less benign or friendly. The use of antonyms allows for a greater understanding of a concept and helps individuals to expand their vocabulary.