Friendly: Apex
bad words
To appear likeable
Formal
It's often easier to trust a likeable person.
To sound like an expert
To create a friendly tone
to show the jury comfort
everyday language
The speaker was very likable.
Lawyers aren't interested in friendly; they are interested in accurate, and at least in documents, neutral.
You can use "silly" in a question to imply a playful or light-hearted tone. For example: "Isn't it silly how cats always seem to find the most awkward places to nap?"
Never hire a relative as a lawyer.
That is the lawyers briefcase.