The antonyms for the word "more vinegary" would be words that describe a lack of acidity or sourness. Words such as sweet, mild, bland, or gentle would be the opposite of vinegary. Vinegar is often associated with a sharp or pungent taste, so words that describe a milder or sweeter taste would be opposite in meaning. For example, honey or sugar would be antonyms for vinegar. It's important to note that antonyms don't always have a direct opposite meaning, but rather describe something that is different or contrasting in nature.