unsentimental

US /ˌʌn.sen.t̬əˈmen.t̬əl/
UK /ˌʌn.sen.t̬əˈmen.t̬əl/
1.

ไม่รู้สึกตัว

not influenced by emotions or not giving too much importance to emotions, especially love or sadness:

:
They have an unsentimental approach to life.