Buttoned-up and Halcyon

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

Halcyon and buttoned-up are semantically related. In some cases you can use "Halcyon" instead an adjective phrase "Buttoned-up".

Halcyon adjective - Free from storms or physical disturbance.

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