| singular | plural |
| Infinitive | | |
| define | |
| present simple | | |
| 1 | I define | we define |
| 2 | you define | you define |
| 3 | he/she/it defines | they define |
| past simple | | |
| 1 | I defined | we defined |
| 2 | you defined | you defined |
| 3 | he/she/it defined | they defined |
| future simple | | |
| 1 | I will/shall define | we will/shall define |
| 2 | you will/shall define | you will/shall define |
| 3 | he/she/it will/shall define | they will/shall define |
| conditional simple | | |
| 1 | I would define | we would define |
| 2 | you would define | you would define |
| 3 | he/she/it would define | they would define |
| present continuous | | |
| 1 | I am defining | we are defining |
| 2 | you are defining | you are defining |
| 3 | he/she/it is defining | they are defining |
| past continuous | | |
| 1 | I was defining | we were defining |
| 2 | you were defining | you were defining |
| 3 | he/she/it was defining | they were defining |
| future continuous | | |
| 1 | I will be defining | we will be defining |
| 2 | you will be defining | you will be defining |
| 3 | he/she/it will be defining | they will be defining |
| conditional continuous | | |
| 1 | I would be defining | we would be defining |
| 2 | you would be defining | you would be defining |
| 3 | he/she/it would be defining | they would be defining |
| present perfect | | |
| 1 | I have defined | we have defined |
| 2 | you have defined | you have defined |
| 3 | he/she/it has defined | they have defined |
| past perfect | | |
| 1 | I had defined | we had defined |
| 2 | you had defined | you had defined |
| 3 | he/she/it had defined | they had defined |
| future perfect | | |
| 1 | I will have defined | we will have defined |
| 2 | you will have defined | you will have defined |
| 3 | he/she/it will have defined | they will have defined |
| conditional perfect | | |
| 1 | I would have defined | we would have defined |
| 2 | you would have defined | you would have defined |
| 3 | he/she/it would have defined | they would have defined |
