not sure about everyone else, but the first one i looked for starts with an "n", but it didn't make the list, how come?
I agree though, imo the word you're thinking of is probably banned and the linked list is not a complete/exhaustive one.
If the word is banned you will get an error message saying "Instagram: (400) APINotAllowedError-This tag cannot be viewed" at the top.
OT: We have just managed to carry out a conversation about a word that was not even mentioned once within the conversation itself. And yet, each one of us knows exactly which word we are alluding to. Voldemort, anyone? :)