Where it sits
Close to the standard end now, at least in the US — a rare case of a stigmatised form winning.
What it doesn't mean
Merriam-Webster's usage guide calls it very common and considered standard. American Heritage says educated speakers in all regions of the US now use it.
The reverse. Sneaked is the original; snuck is a 19th-century Americanism, a new irregular form modelled on stick/stuck.
Not at all. It remains fully acceptable — 90 percent of American Heritage's panel approved it in 2008 — and it's the more usual form in British English.
What it really means
Snuck is the success story of the "is it a real word?" arguments. It was once the kind of form teachers circled. Today, as checked in October 2026, Merriam-Webster calls it very common and considered standard.
The surprise is its age, or rather its youth. You might expect an irregular past tense like snuck to be ancient, a survivor from Old English like sang or drove. It isn't. Sneaked is the original past tense. Snuck turned up in American English in the late 1800s, a regional and nonstandard variant, according to both Merriam-Webster and American Heritage.
Where did it come from? Most likely from analogy. English already had stick/stuck and strike/struck, and speakers extended the pattern to sneak/snuck. That makes snuck a newcomer: an irregular verb form invented in modern times.
Then it spread. American Heritage tracks its rise through its Usage Panel: around 1988, two-thirds disapproved of snuck; in 2008, 75 percent accepted it. The dictionary now says educated speakers in every region of the US use it.
The older form hasn't gone anywhere. Sneaked was approved by 90 percent of the same panel, and it is still the usual form in British English; Cambridge lists snuck as "US also".
So write whichever fits your audience. For American readers, snuck is standard. For British readers, or a very traditional editor, sneaked is the safer choice. Neither one is a mistake.
Where it comes from
English — to move quietly; probably akin to Old English snīcan, to creep (AHD)
by analogy with stick → stuck and strike → struck
Both American Heritage and Wiktionary explain snuck as an analogy with verbs like stick/stuck and strike/struck — an irregular past tense that arrived late, not one that survived from Old English.
- Late 1800s
Snuck enters American English as a regional, nonstandard alternative to sneaked (Merriam-Webster; American Heritage).
- c. 1988
Two-thirds (67 percent) of American Heritage's Usage Panel disapprove of snuck, according to the dictionary's note on its survey 'twenty years earlier' than 2008.
- 2008
75 percent of the Usage Panel accept snuck; 90 percent accept sneaked.
In real life
- The cat snuck into the airing cupboard and was found asleep on the clean towels.
- We snuck in through the side door after the film had started and sat on the steps.
- She'd sneaked a look at the answers, or snuck one — her teacher didn't mind which, only that she had.
Questions
Q01Is snuck a real word?
Yes. Merriam-Webster lists it as a past tense and past participle of sneak and calls it standard; Cambridge gives it as the mainly American form. American Heritage reports 75 percent of its Usage Panel accepted it in 2008.
Q02Should I write snuck or sneaked?
Both are correct. Snuck is more common in American English; sneaked is the older form and more usual in British English. If you're writing for a British audience or a very traditional editor, sneaked is the safe choice.
Q03Where did snuck come from?
It's an Americanism from the late 1800s, probably formed by analogy with verbs like stick/stuck and strike/struck. It started as a regional form and spread with each generation.
Q04Why did people object to snuck?
Because it was new, regional and irregular, and sneaked already existed. In the late 1980s, two-thirds of American Heritage's Usage Panel still disapproved. By 2008 three-quarters accepted it.
Sources
- snuck — Merriam-Webster (usage guide: sneaked vs snuck).
- sneak — The American Heritage Dictionary (usage note on snuck).
- sneak — Cambridge Dictionary ('sneaked or US also snuck').
- snuck — Wiktionary (etymology by analogy).