Priggishness is a term used to describe a person's attitude of moral superiority and excessive adherence to etiquette and propriety. It is closely related to the terms PRUDERY and PRUDISHNESS, which both refer to a person's excessive modesty or sense of propriety. PRUDERY is defined as an excessive or affected modesty or sense of propriety, while PRUDISHNESS is defined as an excessive or affected modesty or sense of propriety, especially in relation to sexual matters. Priggishness is often seen as a negative trait, as it can lead to a person being overly judgmental and critical of others.