Vietnamese, only the first-person singular tôi is in common use as a respectful pronoun; any other pronoun should be replaced with the subject's name or with an appropriate epithet, title, or relationship in polite formal speech. Similar to modern Chinese (but to a much greater extent), modern Vietnamese also frequently replaces informal pronouns with kinship terms in many situations. The somewhat insulting second-person singular mày is also frequently used in informal situations among young Vietnamese. Kra–Dai languages Thai In Thai, first, second, and third person pronouns vary in formality according to the social standing of the speaker and the referent and the relationship between them. Austronesian Indonesian In Indonesian, the T–V distinction is extremely important; addressing a stranger with the pronoun kau or kamu (you) is considered rude and impolite (unless the stranger is, for example, a child). When addressing a stranger or someone older, typically Bu ('ma'am') or Pak ('sir') is used. People also use mas (Javanese for 'older brother') or mbak (Javanese for 'older sister') when addressing someone that is not old enough to be called Bu or Pak. There are variations in different areas. If the situation is more formal, such as in meetings or news broadcasting, Anda is always used, even if those addressed would otherwise be addressed by kau or kamu in informal situations. A more informal pronoun, written lu, lo, or sometimes as loe (originated from Hokkien language) is considered very impolite. This is normally used around the capital Jakarta, as in other areas the use of loe is still perceived as rather unusual or as an attempt to imitate Jakartans. Loe is generally used by teenagers to their peers. Adults can sometimes be heard using this pronoun with their close friends or when they are angry. Lu siap? ('Are you ready?'): This form is used between friends in very informal situations without the presence of someone who has higher status. Kamu siap? ('Are you ready?'): This form is used between friends in either informal or formal situations without the presence of someone who has higher status. Anda siap? ('Are you ready?'): This form is used between friends in formal situations, between business partners, or with someone who has higher status. Apakah Anda siap? (Are you ready?): This form is used between friends in very formal situations, among strangers, or toward someone who has higher status. Note that Apakah is an optional question word