Има, няма: there is, I have

Имам means to have: имам, имаш, има, имаме, имате, имат. To say not have, Bulgarian does not put не in front. The negative is one word: нямам, нямаш, няма, нямаме, нямате, нямат. So say Нямам време. (I don't have time.), never *не имам.

The 3rd person forms има and няма also mean there is and there isn't:

• В хладилника има мляко. (There is milk in the fridge.)
• Тук няма никой. (There is nobody here.)

Bulgarian uses a double negative here: няма никой, няма нищо.

In the past, there was is имаше and there wasn't is нямаше: Вчера нямаше ток. (Yesterday there was no electricity.)