آپ

From Proto-Iranian, from Proto-Indo-Iranian *Hā́pš, from Proto-Indo-European *h₂ep-. Compare Persian آب‎ (âb), Kurdish av, Bakhtiari او‎ (aw), Pashto اوبه‎, Avestan 𐬀𐬞‎ (ap), Sanskrit अप् (áp).

• (Western) IPA^(key): /aːp/
• (Eastern) IPA^(key): /aːf/

آپ • (áp)

1. water

• Carina Jahani, Standardization and Orthography in the Balochi Language (1989), page 103: This would mean that, for instance, the Western forms gok 'cow', ap 'water', rod 'day' and waja 'master' would be written, but that the Easterners could read them out as gox, af, ros and waza.

From Sanskrit आत्मन् (ātman)

• IPA^(key): /aːp/

آپ • (āp) (Hindi spelling आप)

1. you (formal, polite and grammatically plural)

• آپ is the most formal way of expressing "you" in Urdu and is used when addressing elders or those higher in social status. Because less formal forms could offend others, آپ is the safest way to express "you" unless there is reason to be less formal.
• Because آپ is grammatically plural (adjectives and verbs etc affected by it take their plural forms) even when there is only one person being referred to, the term آپ لوگ‎ (literally: you people) can be used to specify that more than one person is being referred to because of T-V distinction.

• تم‎ (tum) (mid level formality, grammatically plural)
• تو‎ (tū) (complete lack of human formality, grammatically singular)