I recall from the time of my hobbledehoyhood that the term 'profundity' was employed as a genteel euphemism for a profanity or swear word. I've been scouring the interweb and old hardcopy dictionaries but can find no evidence to corroborate my recollection. Can anyone else remember this usage (British English, some half a century ago)?
ETA: Oops, I should have marked this as off-topic as I don't expect to use it in a story.
AJ