| Base form (v1) | Impair |
| Past form (v2) | Impaired |
| Past Participle (v3) -ed form |
Impaired |
| Present Participle (v4) ‘ing’ form |
Impairing |
| Present simple (v5) s / es/ ies |
Impairs |
Past continuous tense of impair verb forms - Learn English Free Online
