This verb follows the standard English past tense rule: simply add -ed to the base form.
Underdress is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she underdressed to the store."
No. Use "did not underdress" (not "did not underdressed").
The verb underdress follows the standard English past tense conjugation rule. When forming the past tense, underdress becomes underdressed. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why underdress becomes underdressed helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using underdressed 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 underdressed to the store." The past tense form does not change based on the subject — I underdressed, you underdressed, he/she underdressed, we underdressed, they underdressed.