| 1. | Base Form (Infinitive): | Decay |
| 2. | Simple Past: | Decayed |
| 3. | Past Participle: | Decayed |
| 4. | Present Participle: | Decaying |
| 5. | 3rd Person Singular: | Decays |

Decay past tense
| Decayed |
| Decayed is the past tense of the word decay. |
Decay past participle
| Decayed |
| Decayed is the past participle of the word decay. |
Decay verb forms V1 V2 V3 V4
| Infinitive | Past Simple | Past Participle | Present Participle |
|---|---|---|---|
| Decay | Decayed | Decayed | Decaying |
Conjugation of Decay
| Simple / Indefinite Present Tense |
| I decay. |
| He/She/It decays. |
| You/We/They decay. |
| Simple Past Tense |
| I decayed. |
| He/She/It decayed. |
| You/We/They decayed. |
| Simple Future Tense |
| I will/shall decay. |
| He/She/It will decay. |
| You/We/They will/shall decay. |
| Present Continuous Tense |
| I am decaying. |
| He/She/It is decaying. |
| You/We/They are decaying. |
| Past Continuous Tense |
| I was decaying. |
| He/She/It was decaying. |
| You/We/They were decaying. |
| Future Continuous Tense |
| I will be decaying. |
| He/She/It will be decaying. |
| You/We/They will be decaying. |
| Present Perfect Tense |
| I have decayed. |
| He/She/It has decayed. |
| You/We/They have decayed. |
| Past Perfect Tense |
| I had decayed. |
| He/She/It had decayed. |
| You/We/They had decayed. |
| Future Perfect Tense |
| I will have decayed. |
| He/She/It will have decayed. |
| You/We/They will have decayed. |
| Present Perfect Continuous Tense |
| I have been decaying. |
| He/She/It has been decaying. |
| You/We/They have been decaying. |
| Past Perfect Continuous Tense |
| I had been decaying. |
| He/She/It had been decaying. |
| You/We/They had been decaying. |
| Future Perfect Continuous Tense |
| I will have been decaying. |
| He/She/It will have been decaying. |
| You/We/They will have been decaying. |