Acidulous

/ˌæsɪˈdjuːləs/

adjectiveC1

Definition

Acidulous means having a slightly sour or sharp taste or quality. It is often used to describe food or drinks that are not very sour but have a mild acidic flavor. It can also describe a tone of voice or writing that is a little bit sharp or critical, but not harsh.

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See It in Action

Slightly sour taste or flavor

  • The sauce had an acidulous flavor that made the dish refreshing.
  • She enjoyed the acidulous taste of the fresh berries.
  • The drink was acidulous, not too sweet or sour.

Mildly sharp or critical tone in speech or writing

  • His acidulous remarks made the conversation more interesting but not hurtful.
  • The critic’s acidulous review pointed out flaws gently.
  • She gave an acidulous smile, showing a little sarcasm but no anger.

Make It Stick

  • Think of "acidulous" like "sour" (A1 word), but much softer and less strong—like a small lemon taste, not a strong lemon
  • Picture tasting a green apple that is a little sour but still sweet and fresh
  • It's the feeling when someone says something a bit sharp or teasing, but not rude or angry
  • Sounds like "acid-you-lus" → imagine a tiny drop of acid that is gentle, not burning
  • Think of a playful joke that has a little bite but makes you smile, not upset
  • NOT like "bitter" (very strong and unpleasant), acidulous is gentler and more pleasant
  • NOT like "harsh" (very rough or severe), acidulous is mild and light
  • NOT like "sweet" (pleasant and sugary), acidulous is a little sour or sharp, giving balance

Try Other Words

  • Tart: slightly sour taste (Use when the sourness is noticeable but pleasant)
  • Sharp: clear and strong in taste or tone (Use when the sourness or criticism is more direct)
  • Slightly sour: mild sourness (Use in casual conversation to describe gentle sour taste)
  • Biting: sharply critical tone (Use when the tone is stronger and more cutting than acidulous)

Unboxing

  • Word parts: "acid-" (related to acid, sour) + suffix "-ulous" (meaning somewhat or slightly)
  • Etymology: From Latin "acidulus," meaning "somewhat sour"
  • Historical development: Used in English since the early 1600s to describe mild sourness or a slightly sharp manner
  • Modern usage: Mostly used in literary or formal contexts to describe taste or tone that is mildly sour or sharp but not harsh

Reflect & Connect

Can you think of a food or drink that tastes acidulous? How does it feel different from something very sour?
How can a person's tone be acidulous without being rude? When might this be useful in conversation?

Fill in the blanks

1.The lemonade was acidulous because it had just the right amount of ___ to be refreshing.
2.His acidulous comment made people laugh, but it did not ___ anyone's feelings.
3.Unlike bitter coffee, the acidulous flavor in the sauce was ___ and pleasant.
4.When she spoke with an acidulous tone, you could tell she was ___ but not angry.
5.The critic’s acidulous review pointed out ___ without being too harsh.
6.The fruit tasted acidulous, so it was not sweet but also not ___.
7.An acidulous remark often includes a little ___ or teasing without being mean.