Final answer:
The word 'joyous' has an adjective suffix.
Step-by-step explanation:
The word 'joyous' has an adjective suffix. The suffix in this case is '-ous', which changes the noun 'joy' into the adjective 'joyous'. An adjective suffix adds meaning or modifies the word it attaches to. In this case, it denotes the quality of being joyful. Examples of other words with adjective suffixes include 'beautiful' and 'delicious'.
Learn more about Adjective suffix in English words