尤其
yóu qí
especially; particularly
outstanding (尤) + that/such (其) = especially that one thing above others
尤 carries the sense of something standing out or exceeding others, so pairing it with 其 (pointing to a specific thing) naturally yields 'that one in particular.' Together they form a fixed phrase meaning 'especially' rather than drawing on their component parts.
我喜欢水果，尤其是草莓。
wǒ xǐ huān shuǐ guǒ，yóu qí shì cǎo méi。
I like fruit, especially strawberries.
他对音乐很感兴趣，尤其喜欢古典音乐。
tā duì yīn yuè hěn gǎn xìng qù，yóu qí xǐ huān gǔ diǎn yīn yuè。
He is very interested in music, particularly classical music.