The Latin verb for “to be” — Classical languages, 7–10 years
The verb esse means “to be”, and its common forms are sum, es, est, sumus, estis, and sunt. It helps Latin say who someone is, what something is, or where people and things are.
Being someone or something
Latin uses esse for the idea of being. Its form changes with the person: sum means “I am”, es means “you are”, est means “he, she, or it is”, and sunt means “they are”.
Why does the form change?
A sentence needs to show who is being described. English often uses the subject pronoun, but Latin can make the person clear in the verb itself: sum already tells us “I”. This keeps short sentences from becoming vague.
Building a short sentence
Start with Marcus. To say “Marcus is a sailor”, add nauta for sailor and est for “is”: Marcus nauta est. To say “I am a sailor”, replace Marcus with sum and keep nauta: nauta sum. The verb tells who is speaking.
Do not use one form for all
A reasonable mistake is to use est whenever English says “is” or “am”, because the meanings look similar. But est belongs with he, she, or it; sum belongs with I. Latin changes the small word so the sentence points to the right person.
Reading short inscriptions
The forms of esse appear in simple Latin sentences, labels, and inscriptions about people or objects. If you meet est, you can often spot a statement such as “this is…” or “someone is…”, even before every other word is familiar.
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