IPA phoneme /ʊ/
 Common words
Some common words which practice this pronunciation include the following:
- with "oo": book - cook - foot - good - hook - look - shook - took - wool - whoops!;
- with o: wolf - woman
- with "ou": could - would - should;
- with "u": bull - bullet - bush - cushion - pull - push - put;
- homophones: wood/would.
 Anticipated pronunciation difficulties depending on L1
Preconceived ideas and other interferences from L1 obviously interfere in many cases with how students perceive - and pronounce - sounds/words in English. The following sections aims to point out some of the most typical difficulties teachers and students may encounter regarding pronunciation.
While /ʊ/ is very similar to the Spanish letter "u", it is actually much shorter, and most Spanish speakers may have difficulty distinguishing between the vowel sound in "good" and that of /u:/, as in "food", which is longer than the Spanish "u".