IPA: /nɒnˈrɪtɜrnəbl/
KK: /nɑnˈrɪtɜrnəbl/
Describing items that cannot be returned or exchanged after purchase.
The store has a policy that all sale items are nonreturnable.
Nonreturnable → It is formed from "non-" (meaning not) and "return" (from Latin "returnare", meaning to come back) and "-able" (meaning capable of). The word "nonreturnable" means not capable of being returned.
Think of 'not' ('non-') being added to 'return' — this helps you remember that 'nonreturnable' means something that cannot come back.