This verb follows the standard English past tense rule: simply add -ed to the base form.
Impair is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she impaired to the store."
No. Use "did not impair" (not "did not impaired").
The verb impair follows the standard English past tense conjugation rule. When forming the past tense, impair becomes impaired. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why impair becomes impaired helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using impaired in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she impaired to the store." The past tense form does not change based on the subject — I impaired, you impaired, he/she impaired, we impaired, they impaired.