The Collaborative International Dictionary of English v.0.48:

Afghanistani \Afghanistani\ adj.
   1. of or pertaining to Afghanis.

   Syn: Afghani, Afghan, afghanistani
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Afghanistani \Afghanistani\ n.
   1. a native or inhabitant of Afghanistan.

   Syn: Afghan, Pashto, Pathan
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Afghanistani
    adj 1: of or relating to or characteristic of Afghanistan or its
           people [syn: Afghani, Afghan, Afghanistani]
    n 1: a native or inhabitant of Afghanistan [syn: Afghan,
         Afghanistani]