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