What is the correct spelling of onnery
The word you're likely thinking of is ornery.
Ornery is similar to the word cantankerous that refers to someone that has an irritable disposition. When you think of someone that's ornery you might think about the classic old man yelling "Hey you kids! Get off my lawn!"
In spelling buzz, who could forget 2013 champion Arvind Mahankali's winning word, "knaidel" at the Scripps National Spelling Bee. Business Insider went back through the history of Spelling Bee winners to find the coolest words that won a kid a trophy. See the list here.