Which is the correct way to combine the prefix 'dis' with the root word 'satisfy'?

The combination of the prefix 'dis-' with the root word 'satisfy' forms the word 'dissatisfy.' This term captures the essence of negation implied by the prefix 'dis-,' which typically indicates opposition or reversal. In this context, 'dissatisfy' means to fail to satisfy or to cause a lack of satisfaction.

When considering the formation of this word, it's important to recognize that the prefix is generally attached directly to the base form of the root word, which is why 'dissatisfy' is the correct combination. Other options do not follow standard prefix-root word formations or change the meaning significantly from what is intended with 'dis-' and 'satisfy.' For instance, 'disatissify' contains a misspelling and incorrect structure, while 'disfrustrate' and 'discontent' do not relate to the root word 'satisfy' and thus do not accurately represent the concept of negation in this context.