This article provides a description of the main phonological and morphosyntactic features that characterize ideophones in Japhug (Rgyalrong, Sino-Tibetan). Ideophones are among the few words that can occur postverbally, even in relative clauses. Also discussed are the morphological patterns of ideophones, verbs derived from ideophones and their relationship to denominal verbs, and other phonologically marked parts of speech such as interjections and calling sounds and their differences from ideophones.