mean business

US /miːn ˈbɪz.nɪs/
UK /miːn ˈbɪz.nɪs/
"mean business" picture
1.

bersungguh-sungguh, serius

to be serious and determined about what one is doing or saying

:
When the boss walked in with that look on his face, we knew he meant business.
Apabila bos masuk dengan riak wajah itu, kami tahu dia bersungguh-sungguh.
The new security measures show that the company means business about protecting its data.
Langkah-langkah keselamatan baharu menunjukkan bahawa syarikat bersungguh-sungguh dalam melindungi datanya.