He chuckled at the child's clumsiness. 他对小孩笨手笨脚吃吃地笑。
clumsiness
[ noun ]
unskillfulness resulting from a lack of training
<noun.cognition>
the carriage of someone whose movements and posture are ungainly or inelegant
<noun.attribute>
the inelegance of someone stiff and unrelaxed (as by embarrassment)
<noun.attribute>
Clumsiness \Clum"si*ness\, n. The quality of being clumsy.
The drudging part of life is chiefly owing to clumsiness and ignorance. --Collier.
It turned out to be right only because Uncle Sam, in response to the dire predictions, stepped in with the usual clumsiness and blocked the market adaptations that would have prevented shortages.
Conversely, clumsiness, ignorance, or indifference can lead to further intervention in order to correct the mistakes caused by the initial intervention.