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