"More outre" refers to something that is even more unconventional or bizarre. The antonyms for this phrase could include the words "conventional," "predictable," "ordinary," or "mainstream." These terms would describe something that is more traditional, expected, or commonly accepted. For example, in fashion, a designer could create a collection that is more outre with avant-garde shapes and colors, while a more mainstream designer might stick to classic silhouettes and neutral tones. The opposite of more outre could also be described as "conservative," "traditional," or "mainstream," depending on the context. Ultimately, the antonyms for "more outre" suggest something less daring or risky.