wander
verb
move about aimlessly or without any destination, often in search of food or employment
“The gypsies roamed the woods”
“roving vagabonds”
be sexually unfaithful to one's partner in marriage
“She cheats on her husband”
“Might her husband be wandering?”
go via an indirect route or at no set pace
“After dinner, we wandered into town”
to move or cause to move in a sinuous, spiral, or circular course
“the river winds through the hills”
“the path meanders through the vineyards”
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”
Source: WordNet 3.1, Princeton University