The word 非得 is formed through the fusion and semantic reinforcement of two classical Chinese components: 非, which originally meant "not" or carries an emphatic, often negative, imperative force ("must not" or simply "must"), and 得, which means "to obtain" or "to must". Their combination creates a single, inseparable unit where 非 intensifies the compulsory sense of 得, resulting in a compound that conveys an absolute, often counterfactual or resistant, necessity, the idea that something "must necessarily be so" or "insistently must happen", with an inherent nuance that this necessity is contrary to expectation or desire.