A person who boasts or affects the appearance or attitudes of a particular role (especially a tough or competent one) but lacks the qualities, skill, or substance to fulfill that role.
2.
American Englishinformal
A pretender or poseur: someone who adopts the trappings of a profession or identity without the competence or authenticity to back it up.
3.
American Englishinformalhumorous
Someone who is all show and no real ability; all talk and no action.
Examples:
EN: In other words, all hat and no cowboy.
HI: खैर, सभी एक ही, वोदका, किसी तरह की व्हिस्की नहीं।