submodifier Syllabification: (sub·mod·i·fi·er)Pronunciation: /səbˈmädəˌfīər/Definition of submodifier noun Grammar an adverb used in front of an adjective or another adverb to modify its meaning, for example very in very cold or unusually in an unusually large house. Derivatives submodificationPronunciation: /səbˌmädəfiˈkāSHən/ noun submodifyPronunciation: /-ˌfī/ verb submodifier in other Oxford dictionaries Definition of submodifier in the British & World English dictionary