The Spanish verb 'abrumar' (meaning 'to overwhelm') has an interesting etymology that traces back to Ancient Greek. It comes from the Greek word 'broma' (βρῶμα) which meant 'woodworm'. This evolved into the Spanish noun 'bruma' meaning 'burden' or 'trouble'. The verb 'abrumar' was then formed by adding the prefix 'a-' (meaning 'towards') and the verbal suffix '-ar' to 'bruma', creating a verb that literally means 'to put a burden on' and came to mean 'to overwhelm'.

The semantic evolution from 'woodworm' to 'overwhelming burden' is quite fascinating - just as woodworms can gradually wear down and destroy wood, metaphorically something overwhelming can wear down a person's resistance or energy.

A simpler related Spanish word is 'bruma', which means 'mist' or 'fog' in modern Spanish, though it historically meant 'burden' or 'trouble'. While 'bruma' has shifted to describe a physical phenomenon of nature, its derivative 'abrumar' retained the metaphorical sense of being weighed down or overwhelmed.

While there aren't many common English cognates directly related to 'abrumar', the concept of being 'overwhelmed' shares some metaphorical similarity with being 'under the weather' - an English phrase that also uses natural phenomena (weather) to describe a negative state, just as Spanish uses 'bruma' (mist/fog) as part of this word family.