"Pieds-a-terre" refers to a small secondary residence in a different location from one's primary residence. The term is mostly reserved for luxurious apartments in major cities. However, there are other alternative terms available to express the same meaning, such as "second home," "city home," "urban crash pad," "weekend getaway," or "vacation home." These synonyms provide similar implications as "pieds-a-terre" regarding a supplemental residence and convey the idea of a comfortable abode away from the primary dwelling. Using these synonyms can add a subtle flair to your language and enrich your vocabulary while communicating your message effectively.