Template:Es-note-noun-f-starting-with-stressed-a

The feminine noun undefined: is like other feminine nouns starting with a stressed a sound in that it takes the definite article el: (normally reserved for masculine nouns) in the singular when there is no intervening adjective:
 * el undefined:

However, if an adjective intervenes between the article and the noun, the article reverts to la:.

vi:Bản mẫu:spa-note danh từ gc bắt đầu với a trọng âm