This is the 13615th most frequent Russian word.
недружественную
"Недружественную" means "unfriendly."
The word 'недружественную' is used as an adjective describing the noun 'политику' (policy) in the accusative case, reflecting actions perceived as hostile or not friendly.
Россия ответила на недружественную политику других стран.
Russia responded to the unfriendly policies of other countries.
Here, 'недружественную' modifies 'инициативу' (initiative) in the accusative case, referring to a proposal regarded as adversarial.
Они отвергли недружественную инициативу.
They rejected the unfriendly initiative.
In this sentence, 'недружественной' describes 'реакцией' (reaction) in the instrumental case, indicating a response characterized by the lack of friendliness.