off the subject
- tangentLine touching curve once
- digressionVeering off topic
- sidetrackDivert from purpose
- ramblingLong-winded and unfocused
- irrelevantNot pertinent
wandering · detour · distracted · meandering · beside the point · stray · drift · unrelated · astray · veering · divergent · random · scattered · lost · non sequitur · interruption · deviation · squirrel