The English word 'verb' is a direct borrowing from the Latin 'verbum', which simply meant "word". This Latin term itself traces back to the Proto-Indo-European root werh₁-, meaning "to speak" or "to say". The semantic narrowing from the general concept of "word" to the specific grammatical category of "action word" occurred within Latin grammatical tradition. Thus, the modern abstract meaning of 'verb' as the part of speech denoting action or state evolved from its ancient, more general sense related to speech.

The word 'verb' is a simplex loanword from Latin. It cannot be meaningfully segmented into smaller morphemes within its modern English spelling.