The capital of Yemen is Sanaa, which is a four letter word. Anas is also a four letter word that is the capital of Yemen. ADEN is another four letter word that is the former capital of Yemen. Rial is a four letter word that is the currency of Yemen. Adeni is a five letter word that is the dialect of Arabic spoken in ADEN. OMAN is a four letter word that is a neighboring country of Yemen. Sheba is a five letter word that is an ancient kingdom in Yemen.