The confusion comes from phonetics and typing habits, but understanding the correct form will help you avoid embarrassing errors in your writing.
The Correct Spelling: “Input” (Not “Imput”)
The word “input” is the only accepted spelling in English. It combines two simple words: “in” and “put,” which makes perfect sense when you break it down.
“Imput” never appears in any major dictionary. Not in Merriam-Webster, Oxford, Cambridge, or any authoritative source. It’s simply a misspelling that gained traction because people write what they hear.
The word originated in the 1940s from computer science terminology. Engineers literally meant putting data “in” to a system. This technical origin explains why the spelling follows such a straightforward pattern.
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Why Do People Misspell “Input” as “Imput”?
The confusion happens for several clear reasons. First, when we say “input” quickly, the “n” sound can blend into an “m” sound before the “p.” This is called nasal assimilation in linguistics.
Typing speed creates mistakes too. When your fingers move fast, hitting “m” instead of “n” feels natural because both letters are close on the keyboard. Auto-correct doesn’t always catch this error either.
Input vs Imput
| Correct | Incorrect | Why It’s Wrong |
|---|---|---|
| Input | Imput | Not in any dictionary |
| Input data | Imput data | Creates unprofessional appearance |
| User input | User imput | Fails spell-checkers |
How to Use “Input” Correctly
Input works as both a noun and a verb. Understanding both forms helps you use it properly in any sentence.
Input as a Noun
As a noun, input means information, data, or opinions that you provide or receive. It’s what goes into a system, discussion, or project.
- “We need your input on the project deadline.”
- “The system accepts input from multiple sources.”
- “Her valuable input changed our entire strategy.”
- “The form requires user input before submitting.”
Input as a Verb
As a verb, input means to enter or feed information into a system. You can also use “inputted” or “input” as the past tense, though “input” is more common.
- “Please input your password carefully.”
- “She input the data into the spreadsheet yesterday.”
- “They inputted all customer feedback into the database.”
- “You must input valid information to proceed.”
Common Phrases and Collocations with “Input”
Certain phrases pair naturally with input in professional and casual settings. Learning these combinations strengthens your vocabulary.
“User input” refers to information people provide to computers, websites, or applications. Every time you fill out a form online, that’s user input.
“Input data” describes raw information entered into systems for processing. Scientists, analysts, and programmers use this term daily when discussing their work.
“Provide input” means sharing your thoughts, feedback, or information. Managers often ask team members to provide input during meetings or planning sessions.
- “The input field wouldn’t accept special characters.”
- “We appreciate all stakeholder input on this proposal.”
- “The machine requires constant input to function properly.”
Input vs Imput – Detailed Comparison
| Aspect | Input | Imput |
|---|---|---|
| Spelling | Correct | Incorrect |
| Dictionary Status | Found in all major dictionaries | Not recognized anywhere |
| Professional Use | Always acceptable | Never acceptable |
| Etymology | In + Put (1940s) | Misspelling only |
| Example | “Enter your input here” | ❌ Wrong spelling |
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Quick Tips to Remember the Correct Spelling
Think of input as literally putting something “in.” The word breaks down perfectly: IN + PUT = INPUT. This mental trick works every time.
Create a visual connection. Picture yourself putting data IN to a computer. The word “in” stays intact in “input.” You wouldn’t say “imto” instead of “into,” so don’t write “imput.”
Practice writing the word correctly ten times. Your muscle memory will learn the proper finger movements. Type “input” repeatedly until it becomes automatic.
- Remember: If it sounds like “m,” spell it with “n”
- Think: “Information goes IN, we PUT it there”
- Check: Does spell-check flag it? Then it’s wrong
FAQ’s
Is “imput” ever correct?
No, “imput” is never correct in English. It’s always a misspelling of “input,” regardless of context. Professional writers, editors, and grammar checkers universally reject this spelling.
What is the past tense of input?
Both “input” and “inputted” work as past tense forms. Most people prefer “input” for simplicity, as in “I input the data yesterday.” American usage tends toward “input” over “inputted.”
Can “input” be used as a verb?
Yes, input functions perfectly as a verb. You can input data, input information, or input commands. Modern usage accepts this verb form across technical and non-technical writing.
What’s the difference between input and output?
Input is what goes in; output is what comes out. In computing, input includes keyboard strokes or uploaded files, while output includes displayed results or printed documents. They represent opposite directions of information flow.
How do you spell the plural of input?
The plural is “inputs.” Simply add an “s” to the end. For example: “We gathered inputs from five different departments before making our decision.”
Conclusion
Input is the only correct spelling—never use “imput” in your writing. This simple rule protects your professional credibility and ensures clear communication.
Remember the word comes from “in” plus “put,” making the spelling logical and easy to remember. Whether you’re writing emails, reports, or social media posts, always double-check this commonly misspelled word.
At FixerGrammar.com, Johnson Isaacs shares easy grammar tips, clear examples, and helpful guidance to make writing simple, smooth, and mistake-free.
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