Replaceable

I'm replaceable.

You're replaceable.

Tom is replaceable.

We're replaceable.

You aren't replaceable.

Tom isn't replaceable.

I know that Tom is replaceable.

I know that I'm replaceable.

Tom is replaceable, but Mary isn't.

Tom isn't replaceable, but Mary is.

a replaceable battery    replaceable parts

The machine uses a replaceable filter.

He knew he was not easily replaceable at work.