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