adj.

ill-natured; malevolent; negative; spiteful; black-hearted; ill-affected; ill-boding; carping; cattish; evil-minded; ill-affected a; ill-disposed; black hearted; evil minded; ill affected; ill boding; ill natured; jealous; unwelcoming (Vulpes11); uncharitable (Баян); gloating; catty; intimidating (Moscowtran); splenetic (VLZ_58); sour (VLZ_58); evil-wishing (Taras); mean; evil wishing; malign; ill willed; unfriendly; unkindly

Gruzovik

nasty; hostile; unkind

Игорь Миг

vitriolic

amer.

peevish (I would rather figure things out on my own than ask that peevish librarian for help. Val_Ships)

antic.

unbenign

inf.

crusty (harsh and unfriendly (Britannica Dictionary) – о человеке • "This is a gem of a beach. Passage Island can be viewed in distance, free street parking on Dufferin Аve, usually not crowded at all. " "Careful that crusty locals don't see you!" (Reddit) -- "Смотри, не попадайся на глаза недоброжелательным местным жителям!" ART Vancouver)

toxic (igisheva)

недоброжелательно adv.

gen.

with a jaundiced eye (Anglophile); blackly; acrimoniously (AlexP73); malevolently

Gruzovik