prefix
B1Pronunciation
UK
- /prˈiːfɪks/
US
- /ˈprifɪks/
Description
- letters at start
- added before a word
- changes meaning
- word part
Imagine LEGOs! This is like a special LEGO piece you snap onto the front of another piece to change what you make. In language, it is a group of letters added to the beginning of a word to change its meaning. It usually does not stand alone, so it needs a base word to make sense.
Think about "unhappy." "Happy" means joyful, but add "un-" and now it means not joyful. Or consider "rewrite" - you write something again. These small word parts help us make new words from familiar ones. They can make a word negative (like "disagree"), show that something happens earlier (like "preheat"), or point to place or position (like "submarine").
A prefix is a group of letters added to the beginning of a word to modify its meaning. It is a fundamental part of how language expands and creates nuance, allowing us to build new words from existing ones without needing entirely new vocabulary. Unlike suffixes (which come at the end), prefixes always appear before the root or base word.
Prefixes can dramatically alter a word's meaning. For example, adding "pre-" often means "before" - think of "preview" (to view before it is released) or "prehistoric" (before recorded history). The prefix "mis-" shows that something is done wrongly or badly, as in "misunderstand" or "misprint." "Im-" can mean "not," as in "impossible" (not possible) or "immature" (not mature).
Understanding prefixes is a key skill for decoding unfamiliar words. If you encounter "deconstruct," knowing that "de-" often means "remove" or "reverse" helps you understand that it means to take something apart. It's like having a secret code-breaking tool!
While some prefixes are very common (like "un-," "re-," and "pre-"), others are less frequent and often come from Latin or Greek origins, adding layers of complexity to the English language. Recognizing these building blocks can significantly improve your vocabulary and reading comprehension. So next time you see a word with something added to the beginning, remember it might just be a prefix at work—shaping meaning one letter at a time!
Examples
- 1
Word formation
Add the prefix "un-" to "happy" to make "unhappy".
- 2
Meaning changes
Some prefixes change the meaning of a word without changing the kind of word it is.
- 3
Name titles
The form asks for your name and any prefix, such as "Ms." or "Dr."
- 4
Invoice codes
All invoice numbers start with the prefix "INV-".
- 5
File naming
The system prefixes each uploaded photo with the user's ID.
Pattern
prefix X with Y
add Y at the beginning of X
- 6
Phone numbers
International phone numbers are often prefixed with a plus sign.
Forms and spellings
4 forms open this card.
Main spelling
- prefixnounverb
Forms
- prefixespluralnounverb
- prefixedpast tenseverbnoun
- prefixing-ing formverbnoun