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