Low-pressure and Nonassertive

Low-pressure adjective - Having a relaxed, casual manner.

Nonassertive and low-pressure are semantically related. In some cases you can use "Nonassertive" instead an adjective phrase "Low-pressure".

Nonassertive adjective - Not aggressively self-assured, though not necessarily lacking in confidence.

Low-pressure and nonassertive are semantically related. You can use "Low-pressure" instead an adjective "Nonassertive".