Final answer:
To find synonyms for 'ridiculous' and 'silly', use a thesaurus. The term that matches both is 'foolish'.
Step-by-step explanation:
To find synonyms for the words 'ridiculous' and 'silly', you can use a thesaurus. A thesaurus is a tool that provides alternative words that have similar meanings.
When you look up 'ridiculous' in a thesaurus, you may find words like 'absurd', 'foolish', or 'ludicrous'. Similarly, if you search for synonyms for 'silly', you might come across words such as 'foolish', 'ridiculous', or 'absurd'.
So, based on the given synonyms, the term that matches both 'ridiculous' and 'silly' is 'foolish'.