"One's bark is worse than one's bite" is a popular idiom that implies that someone sounds too aggressive or intimidating, but is actually harmless or less dangerous. There are a few synonyms for this expression that convey a similar meaning, one of them being "all show and no go." This phrase indicates that someone talks big but can't back up their words. Another synonym is "a paper tiger," which suggests that someone appears powerful but is actually weak and easily defeated. "Blow hard" is another expression that conveys a similar meaning, indicating that someone boasts or threatens excessively. Overall, these synonyms highlight the notion of someone or something being intimidating in appearance, but ultimately not as threatening as they may seem.
