frown; knitted brows
Rare standalone noun; almost exclusively used in the idiom 顰みに倣う (ひそみにならう), meaning 'to imitate someone's frown' or, more broadly, 'to blindly imitate others without thinking'.
Do you know the proverb 'to imitate someone's frown'?
She imitated the frown and knitted her brows in the same way.
Kana spelling is practical for learners and avoids the uncommon kanji.
Alternate kanji spelling, also rare and mostly limited to the same set phrase.
The kanji 顰 means 'frown' or 'knitted brows'. The reading ひそみ is the nominalized form of the verb ひそむ (顰む), an archaic verb meaning 'to knit one's brows'. The exact historical derivation is uncertain, but the word survives almost exclusively in the set phrase 顰みに倣う.