Answer:

RUT

AnswerCrossword Clue
RUTFurrow
RUTGroove
RUTSame old same old
RUTBoring routine
RUTMonotonous routine
RUTRat-race course?
RUTSticking point?
RUTSticking point
RUTUngroovy groove
RUTBad groove to be in
RUTDaily grind
RUTRoutine
RUTEnnui-causing track
RUTThing to be stuck in
RUTRoutine that tires
RUTTraffic evidence
RUTSuspension tester
RUTMind-numbing routine
RUTTiresome routine
RUTUnexciting pattern
RUTDeep tire track
RUTWearisome routine
RUTPlace to get stuck
RUTDirt road hazard
RUTTiresome grind
RUTUnpaved road feature
RUTAll-too-familiar spot
RUTBad place to be stuck
RUTIt's hard to get out of one
RUTSame old same-old
RUTIt's boring to be in one
RUTDull routine
RUTDirt road feature
RUTRoad to nowhere, metaphorically
RUTWagon wheel depression
RUTTrack
RUTWagon wheel groove
RUTBiker's hazard
RUTSymbol of tiredness
RUTSome people are stuck in one