I want to get the content at the end of the word (English standard, explanation), how to write this regular expression

abandon vt. To discard; abandon, or discard the, abrupt adj.. Suddenly, unexpectedly
I want to get the content at the end of the word (English mark, explanation), how does this regular expression write

including abstract adj. Abstract n. Abstract

Mar.05,2021

/(?<=abandon).*/
Menu