unfashionable, unsophisticated, or uncouth; lacking refinement or stylishness
その古いコートは少し野暮ったく見えるよ。
That old coat looks a bit unfashionable.
彼の言い方は率直すぎて、時々野暮ったく感じられる。
His way of speaking is too blunt and sometimes comes off as uncouth.
色の組み合わせが野暮ったいので、もっと明るい色を着てみたら？
The color combination looks unfashionable — why not try wearing brighter colors?