For example.
Let's say you set the word "take" to have a sub of "take (on me)".
You are in a conversation with someone who says "I'm sorry, I was mistaken about that". The sub will replace that with: "I'm sorry, I was mistake (on me)n about that."
I'd love to be able to toggle subs to only apply to full words, such that it would sub correctly on "take", but not on "mistaken".