a- (ka/bu) a warning sound or a sound made to attract attention (as in greeting a person at a distance) which is produced by patting the mouth repeatedly with the palm of the hand, okukuba obuluulu, to make the sound described above. cf. enduulu.

e- (n/n) a warning sound or a sound made to attract attention which is produced by patting the mouth repeatedly with the palm of the hand, okukuba enduulu, to sound the alarm, okwekubira enduulu, to present one's proposals/grievances/demands. cf. akaluulu.