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