Question

Knowing the meaning of the prefix un-, what does the word unnecessary mean in the following sentence? The teacher said that doing extra credit was unnecessary for seniors. under used away from school not needed above the limit

Answer 1

Well knowing that necessary means something needed and un means not, and how it's being used in the sentence, then the most obvious choice is not needed.

Answer 2

not needed

Step-by-step explanation:

Remember that a prefix is an affix that goes attached in the beggining of a word, phrase or base, it creates a derivative word.

In this case, un- means "no", it gives negative or opposite force in adjectives as well as their derivative adverbs and nouns.

As the word "necessary" means something that must be done, by using the un- prefix we can infer that it is not needed, it is not necessary.