expatiate /ɛkˈspeɪʃiˌeɪt/ verb expatiates; expatiated; expatiating
expatiates; expatiated; expatiating
Learner's definition of EXPATIATE
[no object] formal
: to speak or write about something in a way that includes a lot of details or uses many words详述;细说;阐述 —
usually + on or upon