Stockading is a word that refers to the act of building or using a fortification made from wooden stakes or palisades. While there may not be many commonly used antonyms for this specific term, there are several words that can be used to convey the opposite meaning. For example, you could use the word "demolish" to describe the act of tearing down or destroying a stockade. Alternatively, you could use words like "disassemble" or "dismantle" to describe the process of breaking down the fortification. Other possible antonyms for stockading might include terms like "liberate," "free," or "unencumbered," which all suggest a sense of openness or freedom rather than confinement or restriction.