You might hear both “simpler” and “more simple” used in speaking. In particular, when the speaker wants to emphasize the word, they might opt to use “more simple”. However, the correct form is “simpler”.
When using comparatives, a good rule of thumb is to count how many syllables are in the word. For words with 1 or 2 syllables, you add “-er” to the word. For words with 3 or more syllables, the correct usage would be to add “more” in front of the word.
Since “simple” has 2 syllables, it is correct to add “-er” to the word. The correct comparative form is “simpler”.
Simple – Simpler – Simplest
Isn’t this much simpler than you thought?!
Author: Katy Lia, Cambly Tutor
If you’d like to keep this conversation going with Katy, give her a call on Cambly or make a reservation with her here: https://www.cambly.com/en/student/tutor/Katy%20Lia