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