Byappatha [so for byappattha; according to Kern, Toev. s. v. the word is a distortion fr. *vyāpṛta (for which usually P. vyāvaṭa) of vy+ā+pṛ3, pṛṇoti to be busy or active] busy, active. Thus Kern, but the trsln is not satisfactory. It occurs only at 2 passages; Vin iv.2, where combd with vācā, girā, vacībheda, and meaning "mode of speech," and at Sn 961, where it has the same meaning & is referred by Nd1 472 to a mode of speech & expld by SnA 572 by vacana. Thus the derivation fr. pṛ with vyā˚ can hardly be claimed to be correct for Bdhgh's conception of the word; to him it sounded more likely like vy+ā+patha (cp. cpds. vacana -- patha & vāda -- patha), thus "way of speaking."