The word "peacocky" can be defined as showy or ostentatious, so antonyms would be words that convey the opposite meaning. Therefore, some antonyms for "peacocky" would be understated, unassuming, modest, simple, and humble. Using these words to describe a person or an object would suggest that they are not overly flamboyant or trying to attract attention. Instead, they possess a quiet beauty or elegance that is grounded in simplicity. By using antonyms for "peacocky," we can highlight qualities such as humility, sincerity, and authenticity, which are often overlooked in our culture that favors flash and spectacle.