  By defining a concept of boundedness for $ \mathbb{Z}_2^n $-superfunction, we
show that each local positive definite $ \mathbb{Z}_2^n $-superfunctions, which
is bounded in some sense, on a $ \mathbb{Z}_2^n $-Lie supergroup has a positive
definite extension to all of the $\mathbb{Z}_{2}^{n}$-Lie supergroup.
