dictionary-monger n. a lexicographer; a person who has dealings with dictionaries.

1758 J. REED Madrigal & Trulletta I. i. 3, I cannot.. forbear taking notice of the negligence of our *dictionary-mongers, in omitting the explanation of the word intire; or, as it is frequently written entire, in the sense I have now used it.

1818 M. R. MITFORD in A. G. L'Estrange Life M. R. Mitford (1870) II. 27 After the fashion of certain dictionary-mongers who ring the changes upon two words.

2008 J. GARTH in S. Caldecott & T. Honegger Tolkien's Lord of Rings 25 Tolkien was already an inveterate dictionary-monger; his sole contribution to Exeter's ungergraduate suggestions book was for the purchase of 'a good English dictionary'.