OO (zoo) Sound Word List
By Rodney Everson
The /oo/ sound is one of four sounds you can think of as beginning with the letter “o”. The four sounds are /ow/ (cow), /oy/ (toy), /oo/ (zoo), and /oul/ (would).
Of the 7,000 words in the database constructed from a popular children’s dictionary, 111 of them are one-syllable words in which the vowel sound is /oo/. There are nine different spellings, so it is one of the more complex sounds when it comes to spelling accurately. In addition, many of the /oo/ spellings also represent other sounds so overall it is a challenging list of words to learn.
The "oo" spelling is the most common. Both the "ew" and the "ue" spellings are usually found at the end of a one-syllable word. Beyond that, there are few spelling patterns evident in the list.

Comprehensive Word Lists
Features over 100 word lists built from 7,000 words input from a children's dictionary. Lists are organized by vowel and consonant sounds and cover most common spellings. Useful in the classroom for building curriculum aids such as short stories that emphasize specific sounds and spellings. Multisyllable words are also included, chunked according to the method taught in the OnTrack Reading Advanced Code Phonics Workbook.