pro-adverbecommon nounSyllable Decompositionpro-adverbeEtymologyexpandcalque of the English pro-adverb composed of pro- 'pro-' and adverb 'adverb'.Definition1. Function word that can take the place of an adverbial phrase. For example, 'there' is a pro-adverb replacing 'in that place', and 'then' is a pro-adverb replacing 'at that time'.grammaireexpandHyperonymproformeTranslationsenglish:pro-adverbjapanese:代副詞