Mrs Grundy

Mrs Grundy is a figurative name for an extremely conventional or priggish person, a personification of the tyranny of conventional propriety. A tendency to be overly fearful of what the respectable might think is also referred to as grundyism.

Although she began life as a minor character in Thomas Morton's play Speed the Plough (1798), Mrs Grundy was eventually so well established in the public imagination that Samuel Butler, in his novel Erewhon, could refer to her in the form of an anagram (as the goddess Ydgrun). As a figure of speech she can be found throughout European literature.