-ant
I. noun suffix Etymology: Middle English, from Anglo-French, from -ant, present participle suffix, from Latin -ant-, -ans, present participle suffix of first conjugation, from -a- (stem vowel of first conjugation) + -nt-, -ns, present participle suffix; akin to Old English -nde, present participle suffix, Greek -nt-, -n, participle suffix 1. a. one that performs (a specified action) ; personal or impersonal agent <
claimant
>
<
coolant
>
b. thing that promotes (a specified action or process) <
expectorant
>
2. one connected with <
annuitant
>
3. thing acted upon (in a specified manner) <
inhalant
>
II. adjective suffix 1. performing (a specified action) or being (in a specified condition) <
somnambulant
>
2. promoting (a specified action or process) <
expectorant
>

New Collegiate Dictionary. 2001.

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