divagate
v.
1590s, from Latin divagatus, past participle of divagari "to wander about," from di(s)- "apart" (see dis-) + vagari "to wander, ramble" (see vague). Related: Divagated; divagating.
〔李〕[di-;vag;-atev.] v.漫游； 离题 ←vag (L vagari,vagus)=to wander 徘徊
〔蒋〕[di-=dis-离，vag漫步，走，-ate动词后缀;’走离”] 流浪，漫游，入歧途，(谈话)离题