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