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