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