Plunk down and Sit down

Plunk down verb - Set (something or oneself) down with or as if with a noise.

Sit down and plunk down are semantically related in locate topic. In some cases you can use "Sit down" instead a verb "Plunk down".

Sit down verb - Take a seat.

Plunk down and sit down are semantically related in locate topic. Sometimes you can use "Plunk down" instead a verb "Sit down".