acidity (n.)
- acerbity
- acid
- acidness
- acidulousness
- acridity
- acrimony
- agent
- alkali
- alkalinity
- animosity
- anion
- antacid
- asperity
- astringency
- atom
- base
- bile
- bite
- bitterness
- cation
- chemical
- choler
- compound
- copolymer
- dimer
- dryness
- edge
- element
- fierceness
- gall
- greenness
- grip
- harshness
- heartburning
- hyperacidity
- incisiveness
- ion
- isomer
- keenness
- macromolecule
- molecule
- monomer
- mordacity
- oxyacid
- piquancy
- poignancy
- point
- polymer
- pungency
- radical
- rancor
- reagent
- rigor
- roughness
- severity
- sharpness
- soreness
- sour
- sourness
- spleen
- sting
- stridency
- stringency
- tartness
- teeth
- trenchancy
- trimer
- vehemence
- vinegariness
- vinegarishness
- violence
- virulence
