All bark and no bite

Meaning

Refers to a person who makes big threats or acts tough but never actually follows through with any action. They are mostly talk.

Skeptical, unimpressed

Used in a sentence

• The boss yells a lot, but he is all bark and no bite.
• I would not worry about his threats because he is all bark and no bite.
• He talks a big game about moving to the city, but we know he is all bark and no bite.