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