What is a Prefix?

S2-SA4-0009

Grade Level:

Class 2

NLP, Law, History, Social Sciences, Literature, Journalism, Communication

Definition

What is it?

A prefix is a small group of letters added to the beginning of a word. It changes the meaning of the original word to create a new word. Think of it as a 'mini-word' that attaches itself to the front of a bigger word.

Simple Example

Quick Example

Imagine you have the word 'happy'. If you add the prefix 'un-' to the beginning, it becomes 'unhappy'. Just like how adding 'extra cheese' to a dosa changes its flavour, adding 'un-' changes 'happy' to its opposite meaning.

Worked Example

Step-by-Step

Let's find the prefix in the word 're-read'.

1. Identify the main word: The main word here is 'read'.
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2. Look at the letters added to the beginning: We see 're-' attached before 'read'.
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3. Understand what 're-' means: 're-' usually means 'again'.
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4. Combine the meaning: So, 're-read' means 'to read again'.
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ANSWER: The prefix is 're-'.

Why It Matters

Understanding prefixes helps you guess the meaning of new words you encounter in books, news, or even while coding. Journalists use prefixes to write clear headlines, and lawyers use precise language with prefixes to define laws. Knowing prefixes makes you a better communicator and helps you understand complex ideas in subjects like social sciences and literature.

Common Mistakes

MISTAKE: Thinking a prefix is any first part of a word | CORRECTION: A prefix must have its own meaning and be able to be removed, leaving a standalone base word.

MISTAKE: Confusing a prefix with a suffix | CORRECTION: A prefix is added to the BEGINNING of a word, while a suffix is added to the END.

MISTAKE: Spelling the new word incorrectly after adding a prefix | CORRECTION: Always check the spelling of the new word, as sometimes the base word's spelling might slightly change or a hyphen might be needed.

Practice Questions

Try It Yourself

QUESTION: What is the prefix in the word 'disagree'? | ANSWER: dis-

QUESTION: Add the prefix 'pre-' to the word 'view' and explain the new word's meaning. | ANSWER: preview. It means 'to view something before it happens or is shown fully'.

QUESTION: Identify the prefix in 'bicycle' and explain how it relates to the number of wheels a bicycle has. | ANSWER: The prefix is 'bi-'. 'Bi-' means 'two', and a bicycle has two wheels.

MCQ

Quick Quiz

Which of these words contains a prefix?

Banana

Understand

Table

Happy

The Correct Answer Is:

Understand' contains the prefix 'un-' which changes the meaning of 'derstand' (an old English word meaning 'to stand among'). The other words do not have a separate prefix.

Real World Connection

In the Real World

When you use a 'recharge' card for your mobile data, 're-' is a prefix meaning 'again'. You are charging your phone's balance again. Similarly, when you 'pre-book' train tickets online, 'pre-' means 'before', so you are booking them before your journey.

Key Vocabulary

Key Terms

PREFIX: A group of letters added to the beginning of a word to change its meaning | BASE WORD: The original word to which a prefix is added | SUFFIX: A group of letters added to the end of a word to change its meaning | UN-: A prefix meaning 'not' or 'opposite of' | RE-: A prefix meaning 'again' or 'back'

What's Next

What to Learn Next

Now that you know about prefixes, you should learn about 'Suffixes'. Suffixes are similar to prefixes but are added to the end of words. Understanding both will greatly improve your vocabulary and reading comprehension!