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