Buttoned-up and Dummy up

Buttoned-up adjective - Having or showing a lack of friendliness or interest in others.

Dummy up and buttoned-up are semantically related. In some cases you can use "Dummy up" instead a verb phrase "Buttoned-up".

Dummy up verb - To stop talking.

Buttoned-up and dummy up are semantically related. Sometimes you can replace phrase "Buttoned-up" with "Dummy up", this terms are similar.