别扭 (biè niu): ぎこちない

He had just joined this new class and didn't know anyone, so he felt very awkward sitting in the corner.

She wore a dress that didn't fit well; it was tight around the shoulders, and she felt awkward whenever she walked.

The two of them still hadn't made up after their last argument, and now they wouldn't even greet each other when they met; the atmosphere was especially awkward.

He had meant to crack a joke to ease the tension, but unexpectedly said the wrong thing, and the situation instantly became very awkward.

The height of this table doesn't match the chairs; when eating, your arms are always propped up, which feels very awkward.