Adjective: acidulous u'si-ju-lus
- Being sour to the taste
"They found a medium-sized red glossy fruit with a juicy and very acidulous pulp";
- acidic, acid, acidulent
- Harsh or corrosive in tone
"an acidulous tone piercing otherwise flowery prose";
- acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous [N. Amer], sulphurous [Brit, Cdn], virulent, vitriolic
See also: sour, unpleasant