Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun antacid

1 sense of antacid

Sense 1
antacid, gastric antacid, alkalizer, alkaliser, antiacid -- (an agent that counteracts or neutralizes acidity (especially in the stomach))
       => agent -- (a substance that exerts some force or effect)

Antonyms of adj antacid

1 sense of antacid

Sense 1
antacid -- (acting to neutralize acid (especially in the stomach))

INDIRECT (VIA antagonistic) -> synergistic, interactive -- (used especially of drugs or muscles that work together so the total effect is greater than the sum of the two (or more))

Similarity of adj antacid

1 sense of antacid

Sense 1
antacid -- (acting to neutralize acid (especially in the stomach))
       => antagonistic (vs. synergistic), incompatible -- (used especially of drugs or muscles that counteract or neutralize each other's effect)