The word "青涩" is formed by combining the character "青", which denotes the color green or blue and metaphorically suggests youth and immaturity, with "涩", which means astringent or puckery, directly describing the taste of unripe fruit and metaphorically indicating awkwardness or lack of polish; together they create a compound meaning that conveys the idea of someone being young and inexperienced, often with an associated sense of clumsiness or unrefined behavior.