The word "interpose" means to intervene or to insert oneself between two parties. The antonyms of "interpose" are words that describe the opposite action, such as "withdraw", "recede", "retreat", or "step back". These words convey the idea of not getting involved in a situation or avoiding it altogether. Other antonyms for "interpose" could be "neglect", "abdicate", "avoid", or "ignore", which suggest a lack of interest or concern in a particular matter. Thus, while "interpose" suggests active involvement, its antonyms imply a more passive or detached approach.