Still, if you don't have the more accurate word in your vocabulary, then don't use it. It will sound stilted and unnatural in the context of your sentence.
Most importantly though — this is a tool, and not a replacement for taste and judgment. Seen from that perspective, it’s a much more potent tool than what a traditional dictionary offers.
“Conventional” might’ve been a better choice of word than “traditional”, or something else that better conveys the meaning of “in common usage today”, without the “in the olden days” baggage that comes with “traditional”