put up a fight

US /pʊt ʌp ə faɪt/
UK /pʊt ʌp ə faɪt/
"put up a fight" picture
1.

to resist or defend oneself against an attack or challenge

:
The small army decided to put up a fight against the invading forces.
Even though they were outnumbered, they still put up a good fight.
2.

to make a strong effort to achieve something, especially when facing difficulties

:
She had to put up a fight to get her ideas approved by the committee.
It's going to be tough, but we're ready to put up a fight for what we believe in.