plural of birthday

Third-person singular simple present indicative form of birthday

The anniversary of the day on which someone is born. / The anniversary of the day on which something is created.

(intransitive, informal) To celebrate one's birthday.

present participle of birthday

simple past tense and past participle of birthday

Third-person singular simple present indicative form of happy birthday

plural of half birthday

plural of half-birthday

plural of heavenly birthday