What this suffix does
-read forms compound adjectives that describe the extent and breadth of a person's reading. Well-read, widely-read, broadly-read, poorly-read — each compound describes how much and how broadly a person has read. "Well-read" is one of the most important compound adjectives for describing intellectual character in English: it implies not just that someone has read a lot but that their reading has been good, wide, and formative. In the English intellectual tradition, being well-read is a fundamental component of being considered educated. These compounds carry significant social and evaluative weight.