| 5000 Vocabulary List for Visiting Scholars in the USA - Page 377 | |||
| Word | Type | Used in a Sentence | Synonym | 
| oil | noun | We need a quart of oil for the car. | lubricant | 
| verb | You must oil the machine daily. | lubricate | |
| okay/O.K. | adj. | It was an O.K. thing to say. | correct | 
| noun | We need her O.K. before going ahead. | approval | |
| adv. | After the operation he could walk O.K. | correctly | |
| old | adj. | They were reading an old manuscript. | ancient | 
| adj. | The old lady sat in front of her house. | elderly | |
| olive | noun | Olives are often used in salads. | type of fruit | 
| omit | verb | You omitted your name on the form. | overlooked | 
| verb | We will omit her from the list. | delete | |
| on | prep. | The vase was on the table. | above/in contact | 
| prep. | The house was on the beach. | at or along | |
| prep. | The town was on the border. | near | |