infighting
noun [ U ]
uk/ˈɪnˌfaɪtɪŋ/ uscompetition between people within a company or organization, especially to improve their own position or to get agreement for their ideas:
bureaucratic/corporate/political infighting
bitter/vicious infighting The debate sparked months of bitter infighting at the company's highest levels.
be hampered/plagued by infighting In recent years, however, the group has been plagued by infighting and loss of membership.