First-string and High-hat

First-string adjective - Of the very best kind.

High-hat and first-string are semantically related. In some cases you can use "High-hat" instead an adjective phrase "First-string".

High-hat adjective - Being or characteristic of a person who has an offensive air of superiority and tends to ignore or disdain anyone regarded as inferior.

First-string and high-hat are semantically related. Sometimes you can use "First-string" instead an adjective phrase "High-hat".