Unchurch, the word that refers to the act of expelling someone from the church, can be paired with its antonyms to express various shades of meaning. The opposite of Unchurch is the word "churched," which means to admit someone into the church or inviting them back. Alternately, the word "reinstate" is a synonym of "church" and can be used as an antonym to Unchurch. This means that reinstating someone to the church or restoring them to their previous position in the church is the opposite meaning of Unchurch. It's also important to note that words like "affirm" and "bless" can be used as antonyms for Unchurch, as these words signify the act of inclusion and acknowledgement rather than exclusion or condemnation.