Aeropostale is a U.S. fashion retailer known for casual, youth-oriented clothing. As a brand name, it is pronounced as a two-syllable or three-syllable proper noun depending on speaker, commonly rendered as air-o-post-ale or ey-roh-poh-stahl, but widely recognized and used in English discourse as a brand pronunciation. The term itself has French-sounding origins transliterated into English usage.
Full pronunciation guide