| 5000 Vocabulary List for Visiting Scholars in the USA - Page 290 | |||
| Word | Type | Used in a Sentence | Synonym |
| invalid | noun | She was an invalid and could not go. | chronic illness |
| adj. | He had an invalid passport. | defective | |
| invasion | noun | The invasion by Japan was in 1937. | assault |
| invent | verb | We had to invent a new method. | develop |
| invention | noun | The invention of the auto changed man. | creation |
| inventor | noun | The telephone inventor was Bell. | creator |
| invest | verb | We will invest in a computer company. | finance |
| investigate | verb | The police investigated the murder. | inquire into |
| investment | noun | We've an investment in that company. | stake |
| invisible | adj. | It was an invisible terror to him. | unseen |
| invitation | noun | We received an invitation to a wedding. | request |
| noun | Danger is an invitation to many men. | lure | |