The capital of Zambia is Lusaka, but there are a few synonyms that might come in handy if you're looking for alternative terms. Some possibilities include "Zambian capital," "capital city of Zambia," or simply "Zambia's capital." You may also see Lusaka referred to as the "political and administrative center of Zambia," or as a "vibrant urban hub" within the country. Whatever term you choose, just be aware that the correct answer is Lusaka - but it's always helpful to have a few synonyms on hand for variety or to avoid repetition in your writing or conversation.