The term 'posed as' means to pretend or impersonate, but antonyms for this phrase can vary depending on the context. If the connotation is negative, antonyms could include truthful, genuine, or sincere. On the other hand, if the situation is more lighthearted, antonyms could include natural, spontaneous, or transparent. Other options for antonyms could include reality, fact-based, or authentic. Regardless of the context, these antonyms highlight the importance of genuine communication and honest behavior in building trust and successful relationships.