noun Etymology: from the phrase keep a ~ Date: 1815 a steady and determined attitude or manner in the face of trouble, stiff-upper-lip adjective
STIFF UPPER LIP
Meaning of STIFF UPPER LIP in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012