Write like a barrister

When I was in practice I used to write letters before action in a style that would suggest to the other side the letter was drafted by counsel. I reckoned this was more scary. I cannot remember all the terms I used to put in, but they included

"the gravamen of our client's case is..."

"cleave to" (I was never 100% sure what that meant, but it always sounds good).

Any other nominations?

Lol at Judy's letter before action.

"We are suing your client for making ours trip and hurt himself. We are sanguine as to the prospects of success. Our client's nose was also sanguine when he faceplanted into the pavement."

That sort of lingo isn't sound scary at all.  It suggests a very senior junior who never made silk (not good enough) and writes correspondence as if it is 1978.