Shudder to think about and Tremble to think about

Tremble to think about and shudder to think about are semantically related. In some cases you can use "Tremble to think about" instead a verb "Shudder to think about".

Shudder to think about and tremble to think about are semantically related. You can use "Shudder to think about" instead a verb "Tremble to think about".