inept

他在派对上笨拙地打翻了饮料。

He was ___inept at the party and spilled his drink.

她笨拙的演讲技巧让观众感到尴尬。

Her ___inept presentation skills made the audience cringe.

他在重要会议上的笨拙评论显得很不合时宜。

His ___inept remarks during the important meeting were completely out of place.