-ier

-ier

suffix forming nouns
a variant of -eer: brigadier.
[from Old English -ere -er1 or (in some words) from Old French -ier, from Latin -ārius -ary]

-ier1

,
var. of -er 1 , usu. in nouns designating trades: collier; clothier; furrier; glazier.
[Middle English -ier(e), variant of -yer(e) (compare -yer)]

-ier2

,
a noun suffix occurring mainly in loanwords from French, often similar in meaning to -eer, with which it is etymologically identical (brigadier; financier); it is also found in an older group of loanwords with stress on the initial syllable (barrier; courier) and in more recent borrowings without the final r sound (dossier; hotelier).
[< French, Old French < Latin]