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Dictionary-enhanced word family

Word Forms of “Plain”

Without decoration or pattern; simple and easy to understand or see.

Word Family of Plain

What is the noun of plain? — plain

plain

What is the adjective of plain? — plain

plain

What is the adverb of plain? — plainly

plainly

How to Use Each Word Form in a Sentence

  • She wore a plain white shirt to the interview. A2
  • The truth is plain: we need to work harder. B1
  • The plain design of the furniture makes the room look spacious. B1

Word Form Patterns for Plain

-ly

Adds **-ly** to make an adverb describing how an action happens. Example: plain → plainly.

Origin and Word Formation of Plain

From Old French plain, meaning flat or level ground.

Common Word Form Mistakes with Plain

Wrong: The building was very plain decorated.

Correct: The building was very plainly decorated.

Use adverb 'plainly' with 'decorated', not adjective 'plain'.

Frequently Asked Questions About Word Forms of Plain

What are the word forms of “plain”?

The confirmed forms are shown in the word family cards above. Missing parts of speech are hidden instead of filled with placeholder text.

What part of speech is “plain”?

“plain” is primarily a adj. Some forms above show how the same root works as other parts of speech.

Where does “plain” come from?

From Old French plain, meaning flat or level ground.

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