Welcome to the World of Word Building!
Have you ever looked at a long word and felt a bit overwhelmed? Don't worry! Most long words in English are actually made of smaller parts joined together. In this chapter, we are going to learn about prefixes and suffixes. Think of these like LEGO bricks that you can snap onto a "root word" to change its meaning or its job in a sentence. By the end of these notes, you'll be a master word-builder!
What is a Root Word?
Before we add bits to a word, we need to know what we are starting with. A root word (or base word) is a word that can stand on its own and has its own meaning.
Example: In the word unhelpful, the root word is help.
Section 1: Prefixes (G6.2)
A prefix is a group of letters that we add to the front of a root word. Prefixes change the meaning of the word, but they usually don't change the word class (for example, a verb usually stays a verb). Here are the main prefixes you need to know for your KS2 tests:
1. un- (means 'not' or 'opposite')
Example: un + happy = unhappy (not happy).
Example: un + tie = untie (the opposite of tying).
2. dis- (means 'not' or 'opposite')
Example: dis + agree = disagree (to not agree).
Example: dis + appear = disappear (the opposite of appearing).
3. mis- (means 'wrong' or 'badly')
Example: mis + spell = misspell (to spell wrongly).
Example: mis + lead = mislead (to lead someone the wrong way).
4. re- (means 'again' or 'back')
Example: re + play = replay (to play again).
Example: re + visit = revisit (to visit again).
5. de- (means 'remove' or 'down')
Example: de + frost = defrost (to remove frost).
Example: de + value = devalue (to bring the value down).
6. over- (means 'too much' or 'above')
Example: over + cook = overcook (to cook too much).
Example: over + shadow = overshadow (to cast a shadow over something).
7. anti- (means 'against')
Example: anti + social = antisocial (against being social).
Example: anti + clockwise = anticlockwise (against the direction of a clock).
8. auto- (means 'self')
Example: auto + biography = autobiography (a life story written by the person themselves).
Example: auto + graph = autograph (a signature written by a person themselves).
9. super- (means 'above' or 'beyond')
Example: super + market = supermarket (a market that is bigger than a normal shop).
Example: super + human = superhuman (beyond normal human powers).
Key Takeaway: Prefixes go at the start. They are like "direction signs" that tell you how the meaning of the root word has shifted.
Section 2: Suffixes (G6.3)
A suffix is a group of letters added to the end of a root word. Suffixes often change the word class (for example, turning a noun into an adjective or a noun into a verb). Here are the suffixes you need to know:
Suffixes that turn words into Nouns
-ment: Example: enjoy + ment = enjoyment.
-ness: Example: kind + ness = kindness.
Suffixes that turn words into Adjectives
-ful (means 'full of'): Example: play + ful = playful.
-less (means 'without'): Example: care + less = careless.
Suffixes that turn words into Verbs
These suffixes are special because they "convert" nouns or adjectives into doing-words (verbs):
-ate: Example: active + ate = activate.
-ise: Example: magnet + ise = magnetise.
-ify: Example: solid + ify = solidify.
The Suffixes -ly and -er
-ly: This usually turns an adjective into an adverb (telling us how something is done).
Example: quick + ly = quickly.
-er: This can turn a verb into a person who does that action.
Example: teach + er = teacher (a person who teaches).
Plural Suffixes
We use -s or -es to show there is more than one of something.
Example: cat + s = cats.
Example: fox + es = foxes (we use -es when the word ends in x, s, ch, or sh).
Did you know? When adding a suffix that starts with a vowel (like -er or -ate) to a word ending in 'y', we often change the 'y' to an 'i'! For example: happy becomes happiness.
Key Takeaway: Suffixes go at the end. They change what the word does in a sentence.
Common Mistakes to Avoid
1. Double letters: When adding mis- or dis- to a word that starts with 's', you must keep both letters.
Example: mis + spell = misspell. Don't drop an 's'!
2. The 'ful' trap: The suffix -ful only has one 'l' at the end (careful, helpful), even though the word 'full' has two.
3. Forgetting the root: If you aren't sure how to spell a word with a prefix or suffix, take the extra bits off and look at the root word first. If you can spell "appear," you can spell "disappear"!
Quick Review
Prefix: Front of the word (un-, re-, pre-).
Suffix: End of the word (-ness, -ful, -ly).
Root: The main part in the middle.
G6 Vocabulary: Remember that suffixes like -ate, -ise, and -ify are verb-makers!
Note: For more on how verbs change, check out chapter G4 Tenses. For words that mean the same or opposite, see G6 Synonyms and antonyms.