Brazen-faced is an adjective used to describe someone who exhibits boldness or shamelessness in their behavior or speech. The antonyms for brazen-faced would be words that describe someone who is shy, modest, or who has a sense of shame. Some antonyms for brazen-faced include bashful, sheepish, reserved, diffident, meek, humble, demure, timid, or retiring. In contrast to someone who is brazen-faced, these adjectives describe someone who is more likely to be introverted, inhibited, or who lacks confidence. These antonyms can be used to paint a different picture of someone's character, depending on the context in which they are used.