Third-person singular simple present indicative form of expound.(verb)
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Use "expounds" in a sentence
"George Carlin expounds upon the seven words you can't say on TV."
"Seth Godin expounds on Number 10 in his list of Lies to protect the status quo, suggesting that: In a world where things are viral, you're more likely to succeed with passive networking (strangers recommending you) than the old school ..."
"He did not pronounce that unclean which was clean, nor that clean which was unclean, as one of the rabbin expounds it."