Definition of overmasteringly in English:

overmasteringly

adverb

  • To an overmastering degree.

Origin

Mid 19th century; earliest use found in The Contemporary Review. From overmastering + -ly.

Pronunciation

overmasteringly

/ˌəʊvəˈmɑːst(ə)rɪŋli//ˌəʊvəˈmast(ə)rɪŋli/