Also "entombment", "webmaster", and variations of them. But not many; /usr/share/dict/words on my system lists only 45, many of which are minor variations of each other.
Well, I had shifted into pronunciation (mostly because in writing the concept of a "syllable" doesn't exist), but in the larger context, yes, that's fair.
"Entombment" is spelled with -bm-, but the b is not pronounced. (As is also true of the root word "tomb".)