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