The spelling of the word "ENDRP" can be explained using IPA phonetic transcription. The pronunciation of this word is /ˈɛndrəp/. It starts with the vowel sound /ɛ/ followed by the consonant sound /n/. Then, we have the vowel sound /ə/ and the consonant sounds /d/ and /r/. Finally, the word ends with the consonant sound /p/. While the spelling of this word may seem complicated, breaking it down using IPA phonetic transcription can help make it easier to understand and pronounce correctly.