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