Boscages are defined as thick woods, or groves of trees, where the foliage is dense and hides the view. The antonyms of boscages are typically words that describe open spaces or areas that are devoid of trees or large amounts of vegetation. These antonyms might include terms such as clearings, plains, prairies, or deserts. The opposite of boscages can also be phrases that describe a desolate landscape or barren terrain like wasteland, arid plains, or uncultivated fields. While boscages may be beautiful, they can also be claustrophobic and feel oppressive, which is why synonyms for open spaces and freedom are sought after as antonyms.