| 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. |