grin and bear it
US /ɡrɪn ænd ber ɪt/
UK /ɡrɪn ænd ber ɪt/
1.
to accept a difficult or unpleasant situation without complaining
:
•
I don't like my new job, but I have to grin and bear it for now.
•
When things get tough, sometimes you just have to grin and bear it.