You know that the U in guess and guitar is silent. So why can you clearly hear a /w/ sound in language and penguin? English seems to break its own rule, but there is a clean pattern underneath.
When GU comes before a vowel inside a word and the syllable is not stressed on the U, the U often keeps its sound and blends with the G to make /ɡw/. Once you hear it, you cannot unhear it.
The Rule
When G + U is followed by a vowel and the U is pronounced, GU makes the sound /ɡw/ (a hard G plus a quick W). This happens most often after the letters N or A: language, penguin, anguish, distinguish.
See the Pattern in Action
| Word | Sound of GU | How it sounds |
|---|---|---|
| language /ˈlæŋɡwɪdʒ/ | /ɡw/ | LANG-gwij |
| penguin /ˈpɛŋɡwɪn/ | /ɡw/ | PENG-gwin |
| anguish /ˈæŋɡwɪʃ/ | /ɡw/ | ANG-gwish |
| guess /ɡɛs/ | /ɡ/ (silent u) | gess |
Words to Practice
Common Exceptions
When U is only there to keep the G hard, it stays silent and you get plain /ɡ/, not /ɡw/. Compare guess /ɡɛs/, guest /ɡɛst/, guide /ɡaɪd/, guitar /ɡɪˈtɑːr/, and guard /ɡɑːrd/. A quick test: if you can hear a /w/, it is the /ɡw/ pattern; if you cannot, the U is silent.
Quick Tips to Remember
Say the word slowly and listen for a tiny /w/ after the G. If it is there (language, penguin, anguish), spell and pronounce it as /ɡw/. If the word starts with GU (guess, guide, guard), the U is almost always silent. Head over and practice your pronunciation with these word pairs.