Agent noun

In linguistics, an agent noun (in Latin, nomen agentis) is a word that is derived from another word denoting an action, and that identifies an entity that does that action. For example, driver is an agent noun formed from the verb drive.

Usually, derived in the above definition has the strict sense attached to it in morphology, that is the derivation takes as an input a lexeme (an abstract unit of morphological analysis) and produces a new lexeme. However, the classification of morphemes into derivational morphemes (see word formation) and inflectional ones is not generally a straightforward theoretical question, and different authors can make different decisions as to the general theoretical principles of the classification as well as to the actual classification of morphemes presented in a grammar of some language (for example, of the agent noun-forming morpheme).

Words related to agent noun
An agentive suffix or agentive prefix is commonly used to form an agent noun from a verb. Examples:
 * English: -er, -or, -ian, -ist
 * Basque: -le (ikasle 'student' from ikasi 'learn')
 * Dutch: -er, -ende, -or, -iet, -ant, -aar
 * Finnish: -ja/-jä (puhua 'speak', puhuja 'speaker'; lyödä 'hit', lyöjä 'hitter'); -uri (borrowed from '-or'/'er', probably via German)
 * French: -(t)eur (m.); -(t)eure, -(t)euse, -trice, -iste (f.)
 * Georgian: მე- ... -ე (me- ... -e), as in მებაღე (mebaghe 'gardener') from ბაღი (baghi 'garden'); otherwise the nominalization of the present participle (formed with many possible circumfixes) may occur.
 * German: -er, -ler, -ner, -or, -ör, -ist, -it, -ite, -ant, -ent (may be compounded with the feminine ending -in)
 * Greek: -ήρ, -τήρ
 * Hungarian: no specific agentive suffix, the nominalization of present participle (suffix: -ó/-ő, according to vowel harmony) is used instead; examples: dolgozó ('worker'), szerelő ('repairman'), vezető ('leader', 'driver', 'electrical conductor')
 * Irish: -óir (broad), -eoir (slender), -aí (broad), -í (slender)
 * Khasi: prefix nong- or myn-, for example shad 'to dance', nongshad 'dancer'; tuh 'to steal', myntuh 'thief'
 * Latin: -tor (m.) / -trix (f.) / -trum (n.) / -torius, -a, -um (adj.) as in arator / aratrix / aratrum / aratorius; -sor (m.) / -strix (f.) / -strum (n.) / -sorius, -a, -um (adj.) as in assessor / assestrix / *assestrum / assessorius; see also: -ens
 * Maori: kai-
 * Persian: (-ande): from present roots; as in  (gūyande; 'speaker') from  (goftan, gūy-; to speak) /  (-ār) : from past roots; as in  (xwāstār; 'wanter') from  (xwāstan, xwāh-; 'to want'). /  (-gar): from nouns; as in  (kārgar; 'worker') from  (kār; 'work').
 * Polish: see table
 * Quechua: -q (pukllay 'to play', pukllaq 'player')
 * Russian: -чик or -ник (m.) / -чица or -ница (f.) as in ученик 'student'; -тель (m.) / -тельница (f.) as in учитель 'teacher'
 * Spanish: -dor(a), -ero(a), -ista, -ario(a)
 * Turkish: -ci (çiçekçi 'florist' from çiçek 'flower')
 * Welsh: -wr (m.), -ores (f.)