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