Question

To wonder from the topic of discussion one word substitute

Answer 1

Cussion is the word that substitute in the discussion

Answer 2

Answer :

One word substitution tests our ability to express the meaning of a phrase or a clause in a single word. These tests are helpful in determining the vocabulary and communication skills of an individual.

Cambridge English Dictionary defines 'digress' as 'to move away from the main subject you are writing or talking about and to write or talk about something else.'

So, one word substitution of 'To wander from the topic of discussion' is 'digress.'