Tagalog language

Tagalog (/təˈɡɑːlɒɡ/ tə-GAH-log, native pronunciation: [tɐˈɡaːloɡ] ^ⓘ; Baybayin: ᜆᜄᜎᜓᜄ᜔) is an Austronesian language spoken as a first language by the ethnic Tagalog people, who make up a quarter of the population of the Philippines, and as a second language by the majority. Its de facto standardized and codified form, officially named Filipino, is the national language of the Philippines, and is one of the nation's two official languages, alongside English.

Tagalog is closely related to other Philippine languages, such as the Bikol languages, the Bisaya languages, Ilocano, Kapampangan, and Pangasinan, and more distantly to other Austronesian languages, such as the Formosan languages of Taiwan, Indonesian, Malay, Hawaiian, Māori, Malagasy, and many more.

Tagalog is a Central Philippine language within the Austronesian language family. Being Malayo-Polynesian, it is related to other Austronesian languages, such as Malagasy, Javanese, Indonesian, Malay, Tetum (of Timor), and Yami (of Taiwan). It is closely related to the languages spoken in the Bicol Region and the Visayas islands, such as the Bikol group and the Visayan group, including Waray-Waray, Hiligaynon and Cebuano.

Tagalog differs from its Central Philippine counterparts with its treatment of the Proto-Philippine schwa vowel *ə. In most Bikol and Visayan languages, this sound merged with /u/ and [o]. In Tagalog, it has merged with /i/. For example, Proto-Philippine *dəkət (adhere, stick) is Tagalog dikít and Visayan and Bikol dukót.

Proto-Philippine *r, *j, and *z merged with /d/ but is /l/ between vowels. Proto-Philippine *ŋajan (name) and *hajək (kiss) became Tagalog ngalan and halík. Adjacent to an affix, however, it becomes /r/ instead: bayád (paid) → bayaran (to pay).

Proto-Philippine *R merged with /ɡ/. *tubiR (water) and *zuRuʔ (blood) became Tagalog tubig and dugô.

The word Tagalog is possibly derived from the endonym taga-ilog ("river dweller"), composed of tagá- ("native of" or "from") and ilog ("river"), or alternatively, taga-alog deriving from alog ("pool of water in the lowlands"; "rice or vegetable plantation"). Linguists such as David Zorc and Robert Blust speculate that the Tagalogs and other Central Philippine ethno-linguistic groups originated in Northeastern Mindanao or the Eastern Visayas.

Possible words of Old Tagalog origin are attested in the Laguna Copperplate Inscription from the tenth century, which is largely written in Old Malay. The first known complete book to be written in Tagalog is the Doctrina Christiana (Christian Doctrine), printed in 1593. The Doctrina was written in Spanish and two transcriptions of Tagalog; one in the ancient, then-current Baybayin script and the other in an early Spanish attempt at a Latin orthography for the language.