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