untoward

由于一些意外的不当行为，会议不得不提前结束。

The meeting had to end early due to some ___untoward conduct.

他对同事的外表说了一句不合时宜的话，让整桌人陷入了尴尬的沉默。

He made an ___untoward remark about his colleague's appearance that cast an awkward silence over the table.

看到山脊上空聚集起异常的暴风云，徒步者们赶紧返回营地。

The hikers hurried back to camp when ___untoward storm clouds began gathering over the ridge.