unskillful

The unskillful chef burned the soup because he forgot to stir it.

用法提示：形容词 unskillful 作定语，表示“不熟练的”，修饰 chef。

She felt unskillful when she tried to repair the bicycle chain.

用法提示：unskillful 作表语，表示“不熟练的、笨拙的”，说明主语的状态。

His unskillful attempts to negotiate left both sides frustrated.

用法提示：unskillful 作定语修饰 attempts，强调行为缺乏技巧。