The phrase "wast charge" is spelled with a silent "e" in "wast" and a voiceless "ch" sound in "charge." In IPA phonetic transcription, this phrase would be spelled as /weɪst tʃɑːrdʒ/. The "e" at the end of "wast" is silent, meaning it is not pronounced. The "ch" in "charge" is pronounced with the back of the tongue against the soft palate, creating a voiceless fricative sound. Together, these elements create the correct spelling and pronunciation of "wast charge."