undue
adjective [ before noun ] formal uk/ʌnˈdʒuː/ us/ʌnˈduː/
C2 过分的，过度的
to a level that is more than is necessary, acceptable, or reasonable
Such a high increase will impose an undue burden on the local tax payer. 涨幅如此之高会给当地纳税人增加过度负担。