1For a surface to become dented or indented from being hit or pressed.
車のドアがぶつけられて凹んでしまった。
The car door got dented after being hit.
この空き缶、踏んだら簡単に凹んだ。
When I stepped on this empty can, it dented easily.
地面が長年の重みで少しへこんでいる。
The ground has sunk a little over years of weight bearing down on it.
2To be overwhelmed or beaten down by an opponent's force, ending up at a disadvantage.
序盤で相手に攻められて、うちのチームは凹んだ。
Our team was overwhelmed after being attacked by the opponent early on.
値下げ競争でライバル店に凹まされた。
We were beaten down by a rival store in the price-cutting competition.
3(Colloquial) To feel down or dispirited; to get emotionally deflated.
テストの結果が悪くて、かなり凹んでいる。
I'm pretty down because my test results were bad.
友達に強く言われて、彼女は少しへこんだ様子だった。
After her friend spoke harshly to her, she looked a bit down.
そんなに凹まないで、また頑張ればいいよ。
Don't be so down—you can just try again.
4To decline or take a hit in figures or momentum, resulting in a loss—used for things like sales or profit.
今月の売上が予想より凹んだ。
This month's sales dipped below what we expected.
為替の影響で利益が凹んでいる。
Profits have taken a hit due to exchange rate effects.