grammaticalise

Verb

grammaticalize (third-person singular simple present grammaticalizes, present participle grammaticalizing, simple past and past participle grammaticalized)

1. (transitive) To make grammatical.
   • Enhanced output arises when learners grammaticalize their output either through the use of more advanced interlanguage forms or of target language forms.1999, Rod Ellis, Learning a Second Language through Interaction, John Benjamins Publishing, →ISBN, page 174
2. (transitive) To integrate into a system of grammar; to make (something such as a constraint) an element or rule of grammar, to cause (something) to be required by grammar.
   • That is, the cooccurrence restrictions do cross intervening specifications for the same feature. […] In the model, a linguistic constraint against homorganicity (which may grammaticalize constraints on motor programming) is enforced on pairs […]1993, North Eastern Linguistic Society. Meeting, Proceedings of NELS.
3. (transitive) To cause (a word, a suffix, etc) to undergo grammaticalization.
   • Similarly to other classifier languages in South America and elsewhere, a number of nouns grammaticalize as classifiers and are also used as derivational suffixes, e.g. *-maka 'stretch (of cloth)' (from *maka “hammock'), […]2002, Aleksandra I͡Urʹevna Aĭkhenvalʹd, Alexandra Y. Aikhenvald, Aleksandra I︠U︡rʹevna Aĭkhenvalʹd, Language Contact in Amazonia, Oxford University Press on Demand, →ISBN, page 292