The antonyms of *adminicular* describe things or people that are not supportive or helpful. Use *hindering*, *obstructive*, and *unhelpful* to describe unproductive colleagues or processes, people who are not supportive or helpful, and feedback or resources that do not aid learning.

교통 체증이 공항으로의 여행을 방해했습니다.

交通渋滞が空港への旅を*妨げ*ていました。

The heavy traffic was *hindering* our journey to the airport.

도로에서의 건설 작업은 교통 흐름에 *방해*가 되었습니다.

道路の建設工事は、交通の流れを「妨げる」ものでした。

The construction work on the road was *obstructive* to the flow of traffic.

교사의 피드백은 건설적인 비판을 제공하지 않았기 때문에 *도움이 되지 않았습니다*.

教師のフィードバックは、建設的な批判を提供しなかったため、*役に立たなかった*。

The teacher's feedback was *unhelpful* as it did not provide any constructive criticism.