term:

Hostile

hostile adj

1 : having an intimidating, antagonistic, or offensive nature [a work environment]
2 a : of or relating to an opposing party in a legal action [a claim]
b : adverse to the interests of a party to a legal action [if the interests of the party joined involuntarily render him to the original plaintiff, he must remain a defendant “J. H. Friedenthal et al.“]
3 a : adverse to or incompatible with the interests of a property owner [a use] see also adverse possession at possession easement by prescription at easement, prescription
b : unwelcome by or contrary to the interests of corporate stockholders or management [a takeover bid]