A common East Asian liquid sauce, made by subjecting boiled beans to long fermentation and then long digestion in salt and water.

(uncountable, often attributive) Soybeans, or the protein derived from them.

(intransitive, Internet slang, derogatory, uncommon) Synonym of soy out (“to act in the manner of a soy boy”).

(Internet slang, derogatory) Characteristic of a soy boy; weak, unmasculine, etc.