The correct spelling of the phrase "not different peeping" is /nɑt ˈdɪfərənt ˈpipɪŋ/. The word "not" means "no" or "not any" while "different" refers to something that is not the same. "Peeping" means to look quickly, often in secret. The pronunciation of the word "peeping" may sometimes be mistaken as "peaping" due to the way "ee" sounds like "ea" in some dialects. However, the correct spelling of the phrase should still be "peeping."