A lack of balance or proportion; a mismatch or disproportion between things (appearance, quantities, relationships, etc.).
彼女のドレスは会場の雰囲気と不釣合いだった。
Her dress was out of place with the atmosphere of the venue.
収入と生活水準が不釣合いで、貯金がすぐに減ってしまう。
Their income and standard of living are mismatched, so savings quickly run out.
年齢差が大きくて二人はどこか不釣合いに見える。
Because of the large age gap, the two look somewhat mismatched.