Hāsu° (of uncertain origin) occurs with hāsa° in combination with °pañña and is customarily taken in meaning "of bright knowledge" (i.e. hāsa + paññā), wise, clever. The synonym javana-pañña points to a meaning like "quick-witted," thus implying "quick" also in hāsu. Kern, Toev. I 134 puts forth the ingenious explanation that hāsu is a "cockneyism" for āsu = Sanskrit āśu "quick," which does not otherwise occur in Pāli. Thus his explanation remains problematic. — See e.g. M III 25; S I 63; V 376; Ja IV 136; VI 255, 329. — Abstract °tā wisdom S V 412; A I 45.