one-sided; unilateral; arbitrary
一方的に契約を解除された。
The contract was terminated unilaterally.
一方的な報道には注意が必要だ。
Caution is needed with one-sided reporting.
一方的に話すのではなく相手の意見も聞こう。
Instead of talking one-sidedly, let's also listen to the other side.