a person who talks or writes in a prosaic or boring manner
proser in American English
(ˌprouzər)
noun
1.
a person who talks or writes in prose
2.
a person who talks or writes in a dull or tedious fashion
Word origin
[1620–30; prose + -er1]This word is first recorded in the period 1620–30. Other words that entered Englishat around the same time include: geometric, headline, phosphorus, settlement, veto-er is a suffix used in forming nouns designating persons from the object of their occupationor labor (hatter; tiler; tinner; moonshiner), or from their place of origin or abode (Icelander; southerner; villager), or designating either persons or things from some special characteristic or circumstance(six-footer; three-master; teetotaler; fiver; tenner)