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