obstructive
adjective disapproving uk/əbˈstrʌk.tɪv/ us/əbˈstrʌk.t̬ɪv/
有意妨碍的，蓄意阻挠的；刁难的
trying to stop someone from doing something by causing problems for them
We'd have made a decision by now if Jean hadn't been so obstructive. 要不是琼从中作梗我们现在早就作出决定了。