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-atic

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• -ation

  a combination of -ate1. and -ion, used to form nouns from stems in -ate1, (separation); on this model, used independently to form nouns from stems of other origin: starvation. -ation suffix indicating an action, process, state, condition, or result arbitration, cogitation, hibernation, moderation compare -ion, -tion word origin from latin -ātiōn-, suffix of abstract nouns, […]

• -ative

  a combination of -ate1. and -ive, used to form adjectives from stems in -ate1, (regulative); on this model, because of the frequency and productivity of -ate1 , used independently to form adjectives from stems of other origin: normative. -ative suffix of, relating to, or tending to authoritative, decorative, informative word origin from latin -ātīvus, from […]

• -ator

  a combination of -ate1. and -or2. that forms nouns corresponding to verbs ending in -ate1, ,denoting a human agent (agitator; mediator; adjudicator) or nonhuman ent-ty, especially a machine (incubator; regulator; vibrator) performing the function named by the verb. compare -tor, -or2 . -ator suffix a person or thing that performs a certain action agitator, escalator, […]

• -atorium

  -atorium suffix used to form nouns place where an indicated thing is done: drinkatorium/ lubritorium/ printorium

• -atory

  a combination of -ate1. and -ory1. or -ory2 , used infrequently as an independent suffix with the same senses as -ory1. and -ory2 : affirmatory; observatory . -atory suffix of, relating to, characterized by, or serving to circulatory, exploratory, migratory, explanatory word origin from latin -ātōrius; see -ate1, -ory²

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