Monkeys is the correct spelling, while monkies is an incorrect spelling in modern standard English.
The confusion happens because many English nouns ending in a consonant + y, such as baby and city, change y to ies when they become plural.
However, monkey ends in a vowel + y, so its plural is formed by simply adding s: monkey → monkeys.
This small spelling rule can be easy to miss, especially for English learners. In this guide, you will learn why monkeys is correct, where the word comes from, whether British and American English differ, common mistakes, everyday examples, and useful tips for remembering the spelling.
Quick Answer
The correct spelling is monkeys.
- Correct: monkeys
- Incorrect: monkies
Example:
The children enjoyed watching the monkeys at the zoo.
Not:
The children enjoyed watching the monkies at the zoo.
The reason is simple. The singular word monkey ends in ey. The letter before y is e, which is a vowel. When a noun ends in a vowel + y, you normally add s to make the plural.
monkey → monkeys
Compare this with:
- baby → babies
- city → cities
- party → parties
In these words, y follows a consonant, so the y changes to ies.
Merriam-Webster also lists monkeys as the plural of monkey. (merriam-webster.com)
The Origin of Monkies or Monkeys
The word monkey has a long history. It first appeared in English in the 16th century, with early forms including monkie, munkie, and munkye. Its exact origin is uncertain, but it may have come from Middle Low German moneke or Middle Dutch monnekijn. (Etymology Online)
This history is useful because it shows that English spelling has not always been fixed. Older forms of the word looked different from the modern spelling.
The modern spelling monkey eventually became standard. Once the word was established, its plural followed the normal English rule for words ending in vowel + y:
monkey + s = monkeys
The spelling monkies may look logical because words such as baby become babies. However, the rule depends on the letter before the final y.
Here is the key difference:
- vowel + y → add s
- consonant + y → change y to ies
Examples:
- monkey → monkeys
- toy → toys
- boy → boys
- key → keys
- baby → babies
- city → cities
- family → families
So, monkies is not the modern standard plural of monkey.
British English vs American English Spelling
There is no spelling difference between British English and American English for this word.
Both use:
monkey → monkeys
The incorrect form monkies should not be used in standard British or American English.
| Feature | British English | American English |
|---|---|---|
| Singular | monkey | monkey |
| Correct plural | monkeys | monkeys |
| Incorrect plural | monkies | monkies |
| Plural rule | Add s | Add s |
| Example | The monkeys are noisy. | The monkeys are noisy. |
This is different from words such as colour/color or organise/organize, where British and American English may use different spellings.
With monkeys, you do not need to choose a regional spelling. The same form works for readers in the UK, US, Canada, Australia, Pakistan, and other English-speaking regions.
Which Spelling Should You Use?
Use monkeys in all standard English writing.
For American English
Use monkeys in schoolwork, emails, reports, websites, and everyday writing.
Example:
The monkeys were moved to a larger enclosure.
For British English
Use monkeys in the same way.
Example:
The monkeys were seen near the forest.
For Commonwealth English
Countries such as Australia, New Zealand, and Canada also use monkeys.
For Global English
If you are writing for an international audience, monkeys is the only safe choice.
You should avoid monkies because readers may see it as a spelling mistake.
Common Mistakes with Monkies or Monkeys
1. Writing “monkies”
Incorrect: The monkies climbed the tree.
Correct: The monkeys climbed the tree.
2. Applying the “baby” rule
People often remember:
baby → babies
Then they apply the same pattern to monkey:
monkey → monkies
That is incorrect because baby ends in consonant + y, while monkey ends in vowel + y.
3. Forgetting the vowel before “y”
Look at the final two letters:
monkEY
The e comes before y.
Therefore:
monkey + s = monkeys
4. Using “monkies” in formal writing
Even if the meaning is clear, monkies is not the standard spelling. Avoid it in essays, reports, business emails, academic work, and professional content.
5. Confusing plural and possessive forms
These forms have different meanings:
- monkey = one monkey
- monkeys = more than one monkey
- monkey’s = something belonging to one monkey
- monkeys’ = something belonging to several monkeys
Examples:
The monkey ate a banana.
The monkeys ate bananas.
The monkey’s tail was long.
The monkeys’ habitat was protected.
Monkies or Monkeys in Everyday Examples
Using the correct form becomes easy once you see it in normal sentences.
In Emails
We studied monkeys during today’s biology lesson.
In News Writing
Several monkeys were spotted near the town.
On Social Media
These monkeys are so funny! 🐒
In School Assignments
Monkeys are intelligent primates with complex social behavior.
In Formal Writing
Researchers observed the monkeys for several hours.
In a Question
How many monkeys live in this area?
In a General Statement
Some monkeys use tools to find food.
In every example, monkeys is the correct plural.
Monkies or Monkeys – Google Trends & Usage Data
Search interest for monkies or monkeys is mainly driven by people checking the correct spelling. The standard word monkeys is also used naturally in many contexts, including animal science, zoos, wildlife news, education, entertainment, and social media.
Searches for monkies are generally better understood as spelling-error searches rather than evidence that monkies is an accepted plural form.
The spelling question can appear in many English-speaking and English-learning markets because the same consonant + y → ies rule creates confusion. However, the rule does not change by country.
The important usage point is this:
monkeys is the standard spelling in both British and American English.
Dictionary evidence supports this form: Merriam-Webster gives monkeys as the plural of monkey. (merriam-webster.com)
Because Google Trends values can change over time and depend on the selected country, date range, and search type, it is better to treat trend interest as a measure of search behavior rather than as a grammar rule.
Comparison Table: Monkies vs Monkeys
| Word | Correct? | Meaning | Example |
|---|---|---|---|
| monkey | Yes | One monkey | I saw a monkey. |
| monkeys | Yes | More than one monkey | I saw three monkeys. |
| monkies | No | Misspelling of monkeys | Avoid this spelling. |
| monkey’s | Yes | Belonging to one monkey | The monkey’s food was gone. |
| monkeys’ | Yes | Belonging to several monkeys | The monkeys’ enclosure was clean. |
The main spelling difference can be remembered in one line:
monkey + s = monkeys
Not:
monkey → monkies
Easy Way to Remember the Spelling
Use the vowel + y rule.
If a word ends in vowel + y, add s:
- boy → boys
- toy → toys
- key → keys
- day → days
- monkey → monkeys
If a word ends in consonant + y, change y to ies:
- baby → babies
- city → cities
- story → stories
- country → countries
- party → parties
The important part is not simply that the word ends in y. Look at the letter directly before y.
For monkey, that letter is e, a vowel.
So:
monkey → monkeys
FAQS
Is “monkies” a correct spelling?
No. Monkies is an incorrect spelling in modern standard English. The correct plural of monkey is monkeys.
Why is it monkeys and not monkies?
Because monkey ends in a vowel + y. Words with this ending normally form their plural by adding s.
monkey → monkeys
Is “monkeys” correct in British English?
Yes. British English uses monkeys.
Is “monkeys” correct in American English?
Yes. American English also uses monkeys.
What is the singular of monkeys?
The singular is monkey.
One monkey
Two monkeys
Why do babies become babies but monkeys become monkeys?
Because baby ends in consonant + y, while monkey ends in vowel + y.
baby → babies
monkey → monkeys
Is “monkey’s” the plural of monkey?
No. Monkey’s is a singular possessive form. The plural is monkeys.
For example:
The monkey’s cage was open.
For several monkeys:
The monkeys’ cages were open.
Conclusion
The correct spelling is monkeys, because a noun ending in vowel + y forms its plural by adding s rather than changing y to ies.
The incorrect form monkies comes from applying the spelling pattern used in words such as baby → babies to the wrong type of word.
This rule is the same in British and American English, so you can safely use monkeys for any standard English audience.
As a practical takeaway, remember monkey + s = monkeys and check the letter before the final y.
For another useful spelling guide, read our related post on “lily or lilly.”.
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