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