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