pinocchio
n. B2 Upper Intermediate US //pɪˈnoʊkioʊ// pinoc·chio
n. a person who tells lies or is known for being dishonest. It comes from the famous wooden boy in a story who could not stop telling the truth.
n. a person who is known for being dishonest or telling lies. Derived from the titular character of the 19th-century children's novel, who is cursed to speak only the truth.
He is a real pinocchio when it comes to his finances.
The politician was called a pinocchio by the press after he contradicted his own previous statements in the same interview.