"Nem öltözöm át az előtt a fiú előtt."

Translation: I do not change in front of that boy.

[MacLomain]

In English, we don't have to say "clothes"; it's understood from context.

[CliveWilto]

In the UK we would say "I'm not changing in front of that boy" or "I'm not getting changed ..."
"I do not change" requires "clothes" to make sense.

[O_Matty]

Dead straight! What kind of dodgy work is this?

[Judit294350]

I'd be more inclined to say "get changed".

[Ishana92]

what does oltozom mean without the at-

[deactivated user]

To get dressed, with the at it is to change clothes

[Iva52893]

I am not changing in front of that boy.
That is what one would normally say, but it was not accepted.

[Tabrizyc]

So what does the "át" do? Does the sentence not work without it?

[Judit294350]

With just "öltözöm" it means "I put on my clothes" - you need the "át" to give the meaning to "change clothes".

[CliveWilto]

So in one phrase "átöltözöm" means "change clothes" and now it means "change".
A little consistency would be helpful.
The English sentance needs the word "clothes" to make real sense.

[Judit294350]

"clothes" is optional. What are you doing? Changing. The "clothes" is understood. Also you have "Changing Rooms" - no mention of clothes.

[BaloghTams19]

For me, change does not involve clothes automatically. "Nem változom meg a fiú előtt", ez mi lenne angolul? I do not change in front of the boy.