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