Proposed adverbs are provided in this article. The words listed here are commonly found along with the verb proposed in sentences. This reference page helps answer the question what are some adverbs that describe or modify the verb PROPOSED.
accordingly, actually, boldly, clearly, commonly, confidently, coolly, currently, definitely
deliberately, distinctly, duly, early, eventually, famously, finally, formally, formerly
frequently, generally, generously, gravely, humbly, immediately, independently, initially, instantly
kindly, lately, merely, newly, officially, openly, originally, previously, publicly
quickly, really, recently, repeatedly, secretly, seriously, simply, solemnly, subsequently
successfully, successively, suddenly, tentatively, unsuccessfully, usually, voluntarily
Hope this word list had the proposed adverb you were looking for. In addition to adverbs used with proposed, other example verb adverb pairings can be found on this site.
You can help by adding more adverbs in the comments. Thanks.