The word "rubberneck" is correct and usable in written English.
You can use it to refer to someone who shows curiousity or stares at something, especially something they shouldn't be looking at. For example, you could say, "The tourists were rubbernecking as they walked past the accident site."
Dictionary
rubberneck
noun
Someone who engages in rubbernecking, or turning and staring.
Exact(44)
Some slang words are essential because there are no words in the standard language expressing exactly the same meaning; e.g., "freak-out," "barn-storm," "rubberneck," and the noun "creep".
"You don't want something that's going to cause people to rubberneck and crash," said Mr Horgan.
She wrote on Twitter: ".@daily_politics crew are now stuck in the UKIP shop as its surrounded by protesters at Farage coming to #Rotherham to rubberneck"..@daily_politics crew are now stuck in the UKIP shop as its surrounded by protesters at Farage coming to #Rotherham to rubberneck.
You can be as superior as you like about the X Factor and at the same time rubberneck freely at the misfortunes of major artists.
After the attacks of September 11 , 2001 when Bush's approval rating rose to ninety per cent, Winnebagos chugged past Lynch's ranch, and people stopped to rubberneck at the checkpoint that the Secret Service had erected near the entrance to the President's property.
They rubberneck, hotdog, and take pity on turtles, cause fender benders, pileups, and head-on collisions.
Similar(15)
Again, my first instinct is that they must have been rubbernecking, the sordid allegations having made HRH a rather grim sort of draw, or at the very least not as ferociously dull and pointless as the rest of the apres-ski programme.
Look at a smutty picture and, according to research by Steven Most, of Yale University, and his colleagues, you will suffer from a temporary condition known as emotion-induced blindness.Dr Most made this discovery while studying the rubbernecking effect (when people slow down to stare at a car accident).
Today's rubbernecking comes courtesy of Felix Salmon Comparing Old Mutual's share price in London and Harare, Josh Giersch concludes that there are now 35 billion Zimbabwean dollars to one US dollar - up from a mere 17 billion on Friday.
They are elected President of the United States and they attract most of the lovelorn rubbernecking at my neighbourhood coffeeshop.
A happier legislature will be bad news for political rubbernecks.
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com