虎尾壟語音系()為虎尾壟語之音系。

書寫系統
虎尾壟語（Favorlang）基本上使用21個拉丁字母，與一個二合字母(ch)。其餘字母(c,f,v,x,y)用在增音、特殊表示，及外來語上。

音系語詞
語彙的揭取與正詞以《虎尾壟語詞典》為主，其它的語料為輔。現存詞語如下：

*普通名詞：
ch-imit/保護,chach-imit/支配之地(國家),torro/我等,namo/咱們,adass/榮譽,ipa-dass/被讚譽之,ipa-dass-a/被讚譽吧!,sai/來,ipa-saij/令來吧!,ior/贊成、服從,ipa-i-jorr/令被人心服!,aija/贈物,pia-dai/皆,ab’o/寬恕,ab’o-e/寬恕吧!,aap/工作,tatáap/事業,kossi/不從順(惡),rapies/惡,罪,parapies/行惡,hai/禁,sabas/試,ipa-sabas/令試.

音變合併
從音變過程不但可以觀察出語種之間的連繫關係，亦可以看出語種在時間的流程上之演化進程。虎尾壟語之語音經過一連串的音變及合併過程。除了 t, s, *Z > 語音合併外，所有的音變都同於西部平原的台灣南島語諸如：道卡斯語、巴布薩語、巴布拉語、洪雅語，以及邵語等語言。

#原始南島語 n 與 ŋ[ng] 合併為

t、s、*Z 合併為

N 和 S1 合併為

#完全喪失 k、q、*H 等語音
#部分喪失 R、j 語音，包括喪失尾音 -y 及 -w
#*s (在開頭及中間位置) >

註釋
參考文獻
*Jack Ryalls, Susan J. Behrens,"Introduction to Speech Science--From basic theories to clinical application(言語科學概論--從基礎理論到臨床應用)"[https://www.amazon.com/Introduction-Speech-Science-Jack-Ryalls/dp/0205291007/ref=sr_1_1?ie=UTF8&qid=1531926750&sr=8-1&keywords=introduction+to+speech+science],World Publishing; 1 edition (April 24, 2003),pp.167. ISBN 978-0205291007
Ogawa, Naoyoshi. 2003 (by Naoyoshi Ogawa with an introduction by Paul Li.). English-Favorlang vocabulary*[http://www.worldcat.org/title/english-favorlang-vocabulary/oclc/474615489] . Tokyo: Research Institute for Languages and Cultures of Asia and Africa. OCLC Number: 474615489, Description: 224 s. ; 26, 5 cm, (Book). ISBN 4872978536, ISBN 9784872978537
Marsh, Mikell Alan. 1977. Favorlang-Pazeh-Saisiat: a putative Formosan subgroup*[http://www.worldcat.org/wcpa/oclc/29721177?page=frame&url=http%3A%2F%2Fwashingtonstate.worldcat.org%2Foclc%2F29721177%26checksum%3D32cf144e28d361468dcc5abd2ed2025f&title=Washington+State+University&linktype=opac&detail=NTE%3AWashington+State+University%3AARL+Library] . Ph.D. dissertation. WSU Holland & Terrell: OCLC Number: 29721177, Description: viii, 213 l. : ill, Washington State University.

參閱
*虎尾壟語語法

外部連結
*[https://web.archive.org/web/20111213060901/http://language.psy.auckland.ac.nz/austronesian/language.php?id=831 ABVD: Favorlang/Naoyoshi Ogawa (2003)]
*[https://web.archive.org/web/20111213050432/http://language.psy.auckland.ac.nz/austronesian/language.php?id=257 ABVD: Favorlang/Ferrell (1969) ]
*[https://web.archive.org/web/20170409095340/http://language.psy.auckland.ac.nz/austronesian/language.php?id=280 ABVD: Proto-Austronesian/Blust(PAN), R (1999)]
*[https://web.archive.org/web/20130426170317/http://language.psy.auckland.ac.nz/austronesian/language.php?id=718 ABVD: Proto-Austronesian(PAN)/Zorc (1995)]
*[http://www.gutenberg-e.org/andrade/ How Taiwan Became Chinese]
*
*[http://ctld.nthu.edu.tw/bookclub/blog/?update_id=345 南島語讀書會]
*[https://web.archive.org/web/20150923201017/http://www.cbs.polyu.edu.hk/ctdso/dict/ 語言學英漢對照表/香港理工大學]