Answer: polarize

AnswerCrossword Clue
POLARIZEDivide sharply
POLARIZEDivide into two camps
POLARIZECause dissension
polarizeto cause polarization in
polarizeto give polarity to
polarizeto give polarity to, also POLARISE
polarizeto become polarized
polarizeto divide into sharply opposing factions, political groups, etc.