This noun follows the standard English plural rule: simply add -s to the singular form.
Then is regular. It follows the Standard -s rule.
Use plural verbs: "The thens are ready" (not "is ready").
Yes. The plural thens is standard across all English variants.
The word then follows the standard English pluralization rule. When forming the plural, then becomes thens. This follows the Standard -s pattern, which is one of the most common plural rules in English.
Understanding why then becomes thens helps with spelling and pronunciation. This noun follows the standard English plural rule: simply add -s to the singular form.
When using thens in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The thens are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.