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

Once cooked, the meatballs are tender, juicy, and absorb all the garlicky flavor of the sauce, which is rich from Parmesan cheese and nicely balance with a little acidity from wine. —Jasmine Smith, Southern Living, 30 May 2025

Cassis and blackberry flavors are wrapped in a sheath of elegant tannins that slowly dissolve to reveal dazzling acidity and a soft touch of sage in the lingering finish. —Mike Desimone, Robb Report, 25 May 2025

How Sonoma-Cutrer Vineyards makes wines perfect for food pairing Courtesy of the Duckhorn Portfolio Sonoma-Cutrer’s winemakers craft their wines with food pairing in mind, designed with vibrant acidity and balance to suit a wide variety of dishes. —AFAR Media, 20 May 2025

The industry-insider perspective of 30 Rock is reflected in Hacks and Only Murders, while Hacks scratches the Veep itch for acidity. —Joe Reid, Vulture, 26 Apr. 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

Rhymes for acidity

• aridity
• avidity
• cupidity
• fluidity
• humidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity
• rigidity

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