Taglish is a portmanteau of the words "Tagalog" and "English" which refers to the Philippine

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

 language Tagalog

Tagalog language

Tagalog is an Austronesian language spoken as a first language by a third of the population of the Philippines and as a second language by most of the rest. It is the first language of the Philippine region IV and of Metro Manila...

 (or its liberalized official form, Filipino

Filipino language

This move has drawn much criticism from other regional groups.In 1987, a new constitution introduced many provisions for the language.Article XIV, Section 6, omits any mention of Tagalog as the basis for Filipino, and states that:...

) infused with American English

American English

American English is a set of dialects of the English language used mostly in the United States. Approximately two-thirds of the world's native speakers of English live in the United States....

 terms. It is an example of code-switching

Code-switching

In linguistics, code-switching is the concurrent use of more than one language, or language variety, in conversation. Multilinguals—people who speak more than one language—sometimes use elements of multiple languages in conversing with each other...

.

Taglish is perhaps most common in Metro Manila

Metro Manila

Metropolitan Manila , the National Capital Region , or simply Metro Manila, is the metropolitan region encompassing the City of Manila and its surrounding areas in the Philippines...

, where its use has become stereotype

Stereotype

A stereotype is a popular belief about specific social groups or types of individuals. The concepts of "stereotype" and "prejudice" are often confused with many other different meanings...

d. Its influence has nevertheless become great, as it is now arguably a lingua franca

Lingua franca

A lingua franca is a language systematically used to make communication possible between people not sharing a mother tongue, in particular when it is a third language, distinct from both mother tongues.-Characteristics:"Lingua franca" is a functionally defined term, independent of the linguistic...

in many parts of the country. Another related example of code-switching is Englog

Englog

Englog, sometimes Enggalog, is an informal sociolect in the Philippines. The term is a portmanteau of the words ‘English’ and ‘Tagalog’. It is formed by infusing Tagalog words and structures into English, an example of which is called Konyo English...

, English infused with Tagalog words, a popular type being called Coño/Konyo English.

As with other examples of code-switching, Taglish is spoken for convenience.