Remember! A prefix is one or more syllables added to the beginning of a word to form a new word. Prefixes mean something. If you learn the meaning of common prefixes, you will be able to figure out the meaning of a great number of words.
PrefixMeaningExamplesNew Meaning Other Examples imnotimpossible improper not possible not proper impolite impatient unremove from/ opposite of untie untidy remove from being tied unwind, uncover unpack
PrefixMeaningExamplesNew MeaningOther Examples reto do againrecalculate regain realign to calculate again, to get again, to align again reformat, reconfigure, redo innot/ opposite of inadequate incapable not enough not able indecent incurable disnot/ opposite of disorder dissimilar not in order not the same discomfort displace
Application: 1.So if the prefix re means again, and reread means to read again, ___________ means to heat again. 2. If the prefix un means not or the opposite of, and uncomfortable means not comfortable, __________ means not clear.
3.If the prefix im is added to the word mature, a word that means not mature is formed. If the prefix im is added to the word perfect, a word that means _______ is formed. 4. If the opposite of connect is disconnect, the opposite of order is _____.
Application: Try to form the new words by adding prefixes (im, un, in, dis, re) MeaningNew Word 1. to paint again 2. not suitable or proper 3. not acceptable 4. not real 5. not needed 6. lack of courage
What should we remember in spelling words with prefixes?
1. When adding a prefix, don’t change the spelling of the word. 2. Notice that when the prefix ends with the same letter as the first letter of the base word, then you have a double letter. Examples: dissimilar unnecessary