Present
| I | thicken |
| You | thicken |
| She | thickens |
| We | thicken |
| They | thicken |
Past
| I | thickened |
| You | thickened |
| She | thickened |
| We | thickened |
| They | thickened |
Perfect
| I | have | thickened |
| You | have | thickened |
| She | has | thickened |
| We | have | thickened |
| They | have | thickened |
Future
| I | will | thicken |
| You | will | thicken |
| She | will | thicken |
| We | will | thicken |
| They | will | thicken |
Past Perfect
| I | had | thickened |
| You | had | thickened |
| She | had | thickened |
| We | had | thickened |
| They | had | thickened |
Future Perfect
| I | will | have | thickened |
| You | will | have | thickened |
| She | will | have | thickened |
| We | will | have | thickened |
| They | will | have | thickened |
Present - Conditional
| I | would | thicken |
| You | would | thicken |
| She | would | thicken |
| We | would | thicken |
| They | would | thicken |
Perfect - Conditional
| I | would | have | thickened |
| You | would | have | thickened |
| She | would | have | thickened |
| We | would | have | thickened |
| They | would | have | thickened |