This verb follows the standard English past tense rule: simply add -ed to the base form.
Retard is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she retarded to the store."
No. Use "did not retard" (not "did not retarded").
The verb retard follows the standard English past tense conjugation rule. When forming the past tense, retard becomes retarded. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why retard becomes retarded helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using retarded 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 retarded to the store." The past tense form does not change based on the subject — I retarded, you retarded, he/she retarded, we retarded, they retarded.