hold/ stand firm
US /hoʊld fɜːrm / stænd fɜːrm/
UK /hoʊld fɜːrm / stænd fɜːrm/

1.
bertahan teguh, berpegang teguh
to maintain one's position or opinion steadfastly, especially in the face of opposition or difficulty
:
•
Despite the pressure, the company decided to hold firm on its pricing strategy.
Meskipun ada tekanan, perusahaan memutuskan untuk bertahan teguh pada strategi penetapan harganya.
•
The general ordered his troops to stand firm against the enemy's attack.
Jenderal memerintahkan pasukannya untuk bertahan teguh melawan serangan musuh.