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