The spelling of the word "most recessing" can be explained with the use of IPA phonetic transcription. The first syllable "most" is pronounced as /moʊst/ using the long open o sound and the consonant t at the end. The second syllable "recess" is pronounced as /riˈsɛs/ using the short e sound and double s at the end. Lastly, the suffix -ing is pronounced as /-ɪŋ/ using the ng sound. Altogether, the word means the act of or the state of receding the most.