thicken
🇺🇸
/ˈθɪkən/
🇬🇧
/ˈθɪkən/
to make or become more dense or solid; to add a substance to make a liquid thicker
She thickened the sauce by stirring in some cornstarch.
그녀는 옥수수 전분을 넣어 소스를 두껍게 만들었다.