The term "shy word" appears to have a typo or might not be a standard English phrase. However, if we assume you meant "shy," the meaning of "shy" is characterized by a feeling of discomfort or unease in social situations, often leading people to be reserved or timid in expressing themselves.
The word "shy" originates from Middle English "shy," which comes from Old Norse "skýja," meaning "to shy away" or "to flinch." The term has evolved over time to encompass a general feeling of social apprehension or timidity.