overproportionately
/ˌəʊvəprəˈpɔːʃənətli/ /ˌəʊvəprəˈpɔːʃ(ə)nətli/adverb
To an overproportionate degree.
Origin
Late 17th century; earliest use found in Henry More (1614–1687), philosopher, poet, and theologian. From over- + proportionately, after overproportionate.