A uptight person is someone who is overly concerned with propriety and etiquette, often to the point of being excessively rigid or judgmental. The term 'uptight person' can be broken down into two words: 'PRUDE' and 'PRIG'. A PRUDE is someone who is excessively modest or proper, often to the point of being overly critical of others. A PRIG is someone who is excessively moralistic or judgmental, often to the point of being overly strict or rigid. Both terms are used to describe someone who is overly concerned with propriety and etiquette.