A person characterized by or linked to the idea in the stem.
[French -ier or -aire, derived from Latin words in -arius.]
Some examples are millionaire, a person whose assets are worth one million pounds or dollars or more (and other words formed in imitation of it, such as billionaire and zillionaire); commissionaire, a uniformed door attendant at a hotel or theatre (medieval Latin commissionarius, a person in charge); and concessionaire, the holder of a concession or grant. Doctrinaire is now usually an adjective referring to an attempt to impose a doctrine without regard to practical considerations. See also -ar2, -ary1, -er1, and -eer.