Chuck Lorre's vanity card 217 lists the following near-dirty words:
fecund, penal, taint, titmouse, cockamamie, cockatoo, cocksure, coccyx, ballcock, cockeye, prick, prickly, kumquat, titter, cunning linguist, insertion, gobble, guzzle, swallow, manhole, rimshot, ramrod, come, fallacious, lugubrious, rectify, Uranus, angina, paradiddle, spotted dick, dictum, frock, cunctation, engorge, turgid, stiff, bush, uvula, crapulence, masticate, Dick Butkus, gherkin and, of course, the always bewildering lickety-split.
I studied the list carefully, and found there were some I had to look up. Cunctation means the act of procrastinating. Paradiddle is the sound of a snare drum beaten rapidly and continuously. A titmouse isn't a kind of mouse, as I had thought. It's any small insect-eating bird in the family Paridae. Spotted dick is a suet pudding containing currants. Turgid means distended by some internal agent, especially fluid. I suppose the censors would immediately think of a particular body part that can become turgid. I don't see what's so bad about crapulence. Raymond's dad says "holy crap!" all the time. Anyway, crapulence is sickness caused by excessive drinking. I'm surprised Chuck failed to mention niggardly, which means stingy (a niggardly person) or very small in quantity (a niggardly amount).
Chuck Lorre: #217: a list of near-dirty words that aren't actually dirty, but which confuse the CBS censors.
Larry Elder: Smile, When You Say "Niggardly"