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