Common Words:
* ought (modal verb, expressing obligation or expectation)
* brought (past tense of bring)
* fought (past tense of fight)
* sought (past tense of seek)
* thought (past tense of think)
* taught (past tense of teach)
* caught (past tense of catch)
* bought (past tense of buy)
* wrought (past tense of work, often used in a literary context)
Less Common Words:
* fraught (full of or accompanied by)
* draught (a drink, especially of beer)
* drought (a prolonged period of abnormally low rainfall)
* naught (nothing)
* sleight (skillful use of the hands)
* hight (called; named)
* besought (implored; begged)
* forsooth (in truth; indeed)
Note: Some words ending in "ought" are considered archaic or literary.