The Spanish word 'titi', meaning 'young, pretty woman', has an interesting etymology that traces back to both Germanic and Greek roots. It evolved from the Spanish word 'teta' (meaning 'breast'), which itself comes from both the Germanic word 'titta' and the Greek word 'τίτθη' (titthe), both meaning 'breast'. The meaning evolved from a literal anatomical reference to become a colloquial term referring to an attractive young woman, showing how words can shift from literal to figurative meanings over time.

A closely related and more common Spanish word is 'teta' meaning 'breast'. While 'teta' retained its original anatomical meaning from its Germanic and Greek ancestors, 'titi' developed into a more colloquial term for referring to an attractive young woman.

While there isn't a direct cognate in modern English, the word 'teat' is related, coming from the same Germanic root 'titta'. Both the English 'teat' and Spanish 'titi' ultimately trace back to ancient words for breast, though they've evolved differently - 'teat' maintaining its anatomical meaning while 'titi' developed a figurative meaning.