What context can I use each word in?
Learn when and how to use these words with these examples!
knucklehead
Example
Don't be such a knucklehead and forget your keys again. [knucklehead: noun]
Example
He's always doing something silly, what a knucklehead. [knucklehead: adjective]
numskull
Example
I can't believe he forgot his own birthday, what a numskull. [numskull: noun]
Example
She's so absent-minded, she's a total numskull. [numskull: adjective]
Good things to know
Which word is more common?
Knucklehead and numskull are both less common words and may not be familiar to beginner ESL learners. They are more likely to encounter more common synonyms such as 'fool', 'idiot', or 'stupid'.
Whatโs the difference in the tone of formality between knucklehead and numskull?
Neither knucklehead nor numskull are particularly formal words and are best avoided in professional or academic settings.