The Spanish verb 'regañar' (meaning 'to scold' or 'to growl') comes from Late Latin roots that paint a vivid picture of its evolution. It traces back to the Latin word 'gannire', which meant 'to yelp' or 'growl' - like the sound a dog might make. This evolved into two Late Latin variations: 'gannare' (meaning 'to mock or jeer') and 'reganniare' (meaning 'to snarl or growl'). These two paths merged to form the modern Spanish 'regañar', combining both the aggressive vocal aspect of growling and the disapproving nature of mocking into its current meaning of scolding.

A common related Spanish word is 'regaño' (a scolding or telling-off), which is the noun form of 'regañar'. You might also hear 'regañadientes' (reluctantly or grudgingly), which literally combines 'regañar' with 'dientes' (teeth), creating an image of someone growling or grumbling through their teeth.

While English doesn't have any direct cognates from the Latin 'gannire', we can see a similar sound-to-meaning development in words like 'growl' and 'snarl', which also started as onomatopoeic words describing animal sounds and evolved to include human expressions of anger or disapproval. The concept of vocal sounds representing disapproval is a common thread between languages.