layman

plural laymen

1. Layperson, someone who is not an ordained cleric or member of the clergy.
2. broadlySomeone who is not a professional in a given field.

   Let me explain it to you [[in layman's terms|in layman's terms]].

   2 more examples

   Carmen is not a professional anthropologist, but strictly a layman.

   The layman, perhaps, is not fully aware to what extent even the popular reputations of scientists and scholars are made by that class and are inevitably affected by its views on subjects which have little to do with the merits of the real achievements.

   1949, F. A. Hayek, “The Intellectuals and Socialism”, in University of Chicago Law Review, volume 16, number 3, Chicago: University of Chicago, →DOI, page 419

   Antonyms: professional

3. A common person.
4. A person who is untrained or lacks knowledge of a subject.

   should he be held to be just a layman, or does he have some art?

   2005, Plato, translated by Lesley Brown, Sophist, page 221d

   Antonyms: expert, specialist

5. Lay-sister or lay-brother, person received into a convent of monks, following the vows, but not being member of the order.

plural Laymans

1. A surname.