Question

Which of these is a Portmanteau word?

• A. electrocute
• B. grasshopper
• C. brush
• D. post office

Answer 1

Answer:

A. electrocute

Portmanteau is a word, blending the sounds and combining the meanings of two others, for example motel (motor + hotel), brunch (breakfast + lunch), smog (smoke + fog) etc. 
"Electrocute" is a portmanteau of "electricity" and "execute"