The proper spelling of the phrase "didst the laundry" is a bit tricky, but its pronunciation is straightforward. In IPA phonetic transcription, it is pronounced as /dɪdst ðə 'lɔːndri/. The word "didst" is the archaic second person singular form of "did," which means "performed" or "accomplished." It is commonly used in Shakespearean language. The word "laundry" refers to the clothes and linens that have been washed, cleaned, and dried. Overall, the phrase means "you have done the laundry."