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