lose clarity or turn aside especially from the main subject of attention or course of argument in writing, thinking, or speaking; "She always digresses when telling a story"; "her mind wanders"; "Don't digress when you give a lecture"
divagation
الواصلة
di·va·ga·tion
النطق
علم أصول الكلمات
() Noun of action form from verb divagate, from Latin verb divagare + noun of action suffix -ion, from Latin suffix -io.