I'm looking for a word that can substitute an object, whose name is unknown to the speaker.
I'm aware that there are words like "whatsamacallit", "thingamabob", etc., but they seem to be colloquial and I have never heard/seen any such word used in a formal setting. Is any of these common placeholder words appropriate in any situation?
For example, let's say I want to compliment a stranger, but I don't know the English word that represents the object I'm talking about: "You have a nice [placeholder]". What should the placeholder be?
EDIT: I got some feedback that I should provide more examples. So here are some more:
"My [placeholder] will come soon" (Waiting at the train station and not knowing the word "train")
"Where can I throw away my [placeholder] after I've finished eating the banana?" (Not knowing the word "peel")
Just to clarify, what I'm looking for is a universal substitution for any noun that can't be said for whatever valid reason (like not knowing or having forgotten how something is called) so that the sentence doesn't need to be altered in any way. Pretty much like a pronoun, except that you can't just strictly replace a noun with a pronoun. I have never heard anyone say something like "You have a nice it" or "I'm waiting for my it".
If what I'm asking for doesn't exist, I'm willing to accept that as an answer, preferably with some explanation/hypothesis why there isn't such a word.
For me, 'You have a nice [placeholder]' could work in English only if you actually said 'You have a nice whatchamacallit…'. Some might allow a crude attempt at rude innuendo, as 'she has a nice (anything at all that comes in pairs)…' and I very much doubt that's what you meant…
– Robbie Goodwin Sep 07 '22 at 22:20'je ne sais quoi' might have scraped by the original, but those edits deny even that.
Perhaps more usefully, in what other languages do you suggest this could work?
– Robbie Goodwin Sep 08 '22 at 17:49The real question for you should be how a universal simple noun substitution could ever be possible.
If you think rewriting those sentences using pronouns might help, why not try it?
Until then, why do you not believe the closest to [placeholder] you're going to get is prolly 'thing', and that that's true for every language?
– Robbie Goodwin Sep 08 '22 at 19:48