U+0A4B Gurmukhi Vowel Sign Oo

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Gurmukhī (Punjabi: ਗੁਰਮੁਖੀ, Punjabi pronunciation: [ˈɡʊɾᵊmʊkʰiː], lit. 'from the Guru's mouth'; Shahmukhi: گُرمُکھِی) or Gurumukhī is an Indic script predominantly used in present-day Punjab, India. It is an abugida developed from the Laṇḍā scripts, standardized and used by the second Sikh guru Guru Angad (1504–1552). It is commonly regarded as a Sikh script, used by Punjabi Sikhs to write the Punjabi language, and is one of the official scripts of the Indian Republic, while the Arabic-based Shahmukhi script is used in Punjab, Pakistan.

The primary scripture of Sikhism, the Guru Granth Sahib, is written in Gurmukhī, in various dialects and languages often subsumed under the generic title Sant Bhasha or saint language, in addition to other languages like Persian and various phases of Indo-Aryan languages.

Modern Gurmukhī has thirty-five original letters, hence its common alternative term paintī or "the thirty-five", plus six additional consonants, nine vowel diacritics, two diacritics for nasal sounds, one diacritic that geminates consonants and three subscript characters.