90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
When everyone is a subject, it is used with a singular verb.
In formal writing, a pronoun or possessive adjective that refers to everyone is usually singular: Everyone should bring his or her own lunch. However, in conversation and in informal writing these pronouns and possessive adjectives are more often plural: Everyone should bring their own lunch.