O sound words : door, floor, and in some dialects poor(US homophone is pour, not pore).
The words lose, prove, and move (and words based on them) have the long OO sound.
cook
Through
oo oo oo oo oo oo
The word look is spelt in IPA pronunciation as /lʊk/ - the vowel sound ʊ refers to a near-close near-back vowel. This is called a "short OO" vowel sound because it does not have the same force as a long OO (long U) although it is spelled the same. Examples of this (oah) sound are book, good, foot, and put.
Words like blue, through, and cue have the same vowel sound as "true," which is the "oo" sound.
It depends on how you pronounce "tour." The R influences the OO sound, which sounds like the long OO in too followed by an (ur). Dictionaries show this as a short OO as in good and foot, but it is much closer to a long OO sound. The same sound appears in the words boor, poor (pour), and spoor. Words with a long OO include: U words with a silent E (tune, dude) UE words (due, clue) OU words (ghoul) Words with a YOO sound as in humid, human, mule, cute, feud, and fuel.
The UI pair has a long OO sound. The "yoo" sound is heard in words such as cute and fuel.
A long U is a long OO sound, which may also sound like YOO when following certain consonants. There is also a "short OO" sound that is midway between (uh) and (oo). Long OO words : cool, moon, dune, suit, due (also do and dew), stew, lieu, deuce Long OO (YOO) words : cute, fuel, uniform, beauty (Short OO words : good, foot, soot, put, could)
It never sounds like "you" because the double oo sound has no y-glide.
words that have the long oo sound are wood, took, too, noon, good, root, book, wool, and food.
The words include one, done, none, wonder, some, son, ton, won. Also other, another and mother. Also the OO words flood and blood.