Unna [past participle of ud, unatti and undati, see udaka] in phrase pīti-vegen'unna "bubbling up with the excitement of joy", overflowing with joy Mhv 19, 29 (explained by uggatacitta i.e. lofty, exalted commentary). — It may however be better and more in keeping with Pāli word-formation as well as with meaning and interpretation to explain the word as ud + na, taking °na as absolute (base)-form of nam, thus literally "bent up", i.e. raised, high, in meaning of unnata. Cf. the exactly similar formation, use and meaning of ninna = ninnata. Thus unna / ninna would correspond to unnata / ninnata.
unna See 2. ud .
unna p. p. 1 Wet, wetted, moist. 2 ( fig. ) Kind, moved to pity.