Final answer:
The adjective 'disinclined' refers to someone's lack of willingness or reluctance and it remains the same in adjective form. It would not be used to describe a store's status of being closed. The correct adjective for the store being closed would simply be 'closed.'
Step-by-step explanation:
The adjective form of 'disinclined' is simply disinclined itself. In the sentence 'Unable to go in the store because it is close,' the word 'close' is an adjective indicating the physical proximity or the fact that the store is not open. If you meant to describe someone who is not willing or eager to go into the store, you might say they are 'disinclined to enter the store.' However, if the store is closed, 'disinclined' wouldn't be the appropriate adjective to describe the store's status.