I was scrolling through Merriam-Webster's Word of the Day archives, and I came across tons of awesome words that I've never heard of! Here are just a few:
popinjay- a strutting, supercilious person
The popinjay refused to help us with our physics project because she was too busy practicing for her modeling class; therefore, she failed the class.
I went to the fireworks show last night. It was sockdolager!
ripsnorter- a humdinger
The new video game is a ripsnorter!
holus-bolus- all at once
Holus-bolus, the lights turned off and everyone started screaming.
plumply- forthrightly, without hesitation
She went up to the teacher and plumply asked to retake her test.
Holus-bolus, the popinjay plumply got up in the middle of the sockdolager violin concert and complained loudly about the violinist; according to her, even a heavy metal concert would be a ripsnorter compared to this classical music.
I can't wait to use these words in a conversation! :-)