Re: stupidity out of ignorance or avarice
Gosh, if you're implying me then I'm afraid I'm a long way past being a kid. My wife often tells me I'm a miserable old git too, but I'd still never heard of avarice, although another commentard's use of 'avaricious' at least sounds like a word I've heard before.
I love discovering new words - one of the beauties of English is that our language is vast and contains a great many interesting words.