The word "clabbered" refers to curdled milk or other liquid. Antonyms for the word "clabbered" would be terms that represent the opposite of curdled or spoiled, such as fresh, pure, or wholesome. For instance, some possible antonyms for "clabbered" could include words like clean, clear, pristine, pure, unadulterated, and untainted. These terms all suggest a sense of freshness and purity, which is the opposite of the sour and spoiled quality that clabbered milk can have. Other antonyms for "clabbered" might include well-preserved, good, safe, healthy, and tasty, which all describe food and drink that is in good condition and free from contamination.