1871 H. J. Roby § 638 Inchoactives formed directly from noun stems.
1935 G. K. Zipf (1936) iv. 166 The number of different verb-stems and noun-stems which enter into compounds far surpasses the number of available prefixes which may be used in compounds.
1993 38 96 According to the morphological component, seuan is a noun stem.