The word "唬烂" is formed by combining the character "唬", which means to bluff or intimidate, with the character "烂", which means rotten or messy, to create a compound that specifically denotes speaking deceptively or nonsensically. In this formation, "唬" contributes the core sense of deception or falsehood, while "烂" intensifies the meaning by emphasizing the absurd, worthless, or exaggerated nature of the talk, reflecting its origin in Min Nan dialect where "烂" colloquially reinforces notions of falseness or poor quality.