-er

-er -er .

1. [AS. -ere; akin to L. -arius.] The termination of many English words, denoting the agent; -- applied either to men or things; as in hater, farmer, heater, grater. At the end of names of places, -er signifies a man of the place; as, Londoner, i. e., London man. [1913 Webster]

2. [AS. -ra; akin to G. -er, Icel. -are, -re, Goth. -iza, -?za, L. -ior, Gr. ?, Skr. -[=i]yas.] A suffix used to form the comparative degree of adjectives and adverbs; as, warmer, sooner, lat(e)er, earl(y)ier. [1913 Webster]