acidity

noun

acid·​i·​ty ə-ˈsi-də-tē 

a-

plural acidities

1

: the quality, state, or degree of being acid

2

: the state of being excessively acid

Synonyms

• acerbity
• acidness
• acridity
• acridness
• acrimoniousness
• acrimony
• acuteness
• asperity
• bite
• bitterness
• edge
• harshness
• keenness
• poignance
• poignancy
• pungency
• roughness
• sharpness
• tartness

Examples of acidity in a Sentence

detected a certain acidity in the way he responded

the acidity of their relationship was well known to their mutual acquaintances

Recent Examples on the Web

The palate features a lively acidity with passionfruit flavors, kiwi, and a touch of green pepper. —Joseph V Micallef, Forbes, 25 Jan. 2025

Key Ingredients in Arkansas Heavenly Tomato Cake Most of this ingredient list is baking essentials, but a few things are specific to this special recipe: Dutch-process cocoa blend: This cocoa has less acidity thus less natural bitterness. —Jasmine Smith, Southern Living, 21 Jan. 2025

Due to its higher acidity, bokashi compost is less likely to attract pests.2 Less smell. —Lauren Landers, Better Homes & Gardens, 19 Jan. 2025

Isabey, its Sauvignon Blanc estate, is located near the Aegean Sea, where the salty breeze helps the grapes develop a lip-smacking acidity. —Betsy Andrews, Travel + Leisure, 18 Jan. 2025

Word History

Etymology

borrowed from French & Late Latin; French acidité, going back to Middle French, borrowed from Late Latin aciditāt-, aciditās, from Latin acidus "sour, acid entry 2" + -itāt-, -itās -ity

First Known Use

1615, in the meaning defined at sense 1

Kids Definition

acidity

noun

acid·​i·​ty ə-ˈsid-ət-ē 

a-

plural acidities

1

: the quality, state, or degree of being acid

2

: the state of being extremely acid

Medical Definition

acidity

noun

acid·​i·​ty ə-ˈsid-ət-ē, a- 

plural acidities

1

: the quality, state, or degree of being sour or chemically acid

the acidity of lemon juice

2

: the quality or state of being excessively or abnormally acid : hyperacidity