Etymology
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-ation 
ending of some nouns of action; see -ate + -ion.
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-ization 
word-forming element making nouns of action, process, or state; see -ize + -ation.
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-ing (1)
suffix attached to verbs to mean their action, result, product, material, etc., from Old English -ing, also -ung, from Proto-Germanic *-unga-, *-inga- (cognates: Old Norse -ing, Dutch -ing, German -ung). In early use often denoting completed or habitual action; its use has been greatly expanded in Middle and Modern English.
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-ure 
suffix forming abstract nouns of action, from Old French -ure, from Latin -ura, an ending of fem. nouns denoting employment or result.
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-faction 
word-forming element making nouns of action from verbs, from Latin -factionem (nominative -factio), from facere "to make" (from PIE root *dhe- "to set, put").
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-acious 
compound adjectival word-forming element of Latin origin, attached to verb stems and expressing intensity of action: "given to, inclined to, abounding in," or expressing intensity of physical or mental action, from Latin -aci- (nominative -ax, accusative -acem), noun ending used with verbal stems (see -acea), + -ous. The accompanying nouns are formed in -acity.
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-sis 
suffix in Greek-derived nouns denoting action, process, state, condition, from Greek -sis, which is identical in meaning with Latin -entia, English -ing (1).
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chemo- 

before vowels chem-, word-forming element denoting "relation to chemical action or chemicals," from combining form of chemical (adj.), used to form scientific compound words from c. 1900. In 19c., chemico- was used.

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-ado 
in commando, desperado, tornado, and other words of Spanish and Portuguese origin, "person or group participating in an action," from Latin -atus, past participle suffix of verbs of the first conjugation (see -ade).
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-ion 
word-forming element attached to verbs, making nouns of state, condition, or action, from French -ion or directly from Latin -ionem (nominative -io, genitive -ionis), common suffix forming abstract nouns from verbs.
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