Verbs ending in a consonant followed by -y change the -y to -ied in the past tense form.
Derby is regular. It follows the -ied Conversion rule.
Use past time markers: "Yesterday, she derbied to the store."
No. Use "did not derby" (not "did not derbied").
The verb derby follows the standard English past tense conjugation rule. When forming the past tense, derby becomes derbied. This follows the -ied Conversion pattern, which is one of the most common conjugation rules in English.
Understanding why derby becomes derbied helps with spelling and pronunciation. Verbs ending in a consonant followed by -y change the -y to -ied in the past tense form.
When using derbied 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 derbied to the store." The past tense form does not change based on the subject — I derbied, you derbied, he/she derbied, we derbied, they derbied.