Answer: deepseated

AnswerCrossword Clue
DEEPSEATEDInherent
DEEPSEATEDThoroughly ingrained
DEEPSEATEDBred-in-the-bone
DEEPSEATEDTough to root out
DEEPSEATEDEntrenched
DEEPSEATEDDifficult to eradicate