Verbs ending in a consonant followed by -y change the -y to -ied in the past tense form.
Inability is regular. It follows the -ied Conversion rule.
Use past time markers: "Yesterday, she inabilitied to the store."
No. Use "did not inability" (not "did not inabilitied").
The verb inability follows the standard English past tense conjugation rule. When forming the past tense, inability becomes inabilitied. This follows the -ied Conversion pattern, which is one of the most common conjugation rules in English.
Understanding why inability becomes inabilitied helps with spelling and pronunciation. Verbs ending in a consonant followed by -y change the -y to -ied in the past tense form.
When using inabilitied 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 inabilitied to the store." The past tense form does not change based on the subject — I inabilitied, you inabilitied, he/she inabilitied, we inabilitied, they inabilitied.