This verb follows the consonant-vowel-consonant (CVC) pattern. The final consonant is doubled before adding -ed to maintain the short vowel sound.
Interval is regular. It follows the Consonant Doubling rule.
Use past time markers: "Yesterday, she intervalled to the store."
No. Use "did not interval" (not "did not intervalled").
The verb interval follows the standard English past tense conjugation rule. When forming the past tense, interval becomes intervalled. This follows the Consonant Doubling pattern, which is one of the most common conjugation rules in English.
Understanding why interval becomes intervalled helps with spelling and pronunciation. This verb follows the consonant-vowel-consonant (CVC) pattern. The final consonant is doubled before adding -ed to maintain the short vowel sound.
When using intervalled 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 intervalled to the store." The past tense form does not change based on the subject — I intervalled, you intervalled, he/she intervalled, we intervalled, they intervalled.