There isn't a single perfect antonym for "cell" because it can have different meanings depending on the context. Here are some possible antonyms depending on the meaning:

If "cell" refers to a small room in a prison:

* Freedom

* Open space

* Spaciousness

If "cell" refers to the basic unit of life:

* Organism (a complete living being)

* Multicellular organism (an organism made up of many cells)

* Tissue (a group of similar cells working together)

If "cell" refers to a small compartment in a battery or other device:

* Large unit

* Component

To give you the best antonym, please provide me with the specific context in which you are using the word "cell."