bitterness   
afero
bitterness, costly. [mal ampada(?).] [Richardson 1885]
fahangidiny
bitterness; amertume of the spirit [Hallanger 1973]
faitra
bitterness, as the taste of quinine. [Mal. pait.] [Richardson 1885]
bitterness [Hallanger 1973]
ngidy
bitterness [Richardson 1885, Hallanger 1973]