IPA: //ʌnˈkɜːrənt//
KK: /ʌnˈkɜr ənt/
Not currently in use or circulation, especially referring to currency that is no longer accepted.
The bank no longer accepts uncurrent bills as payment.
Uncurrent → It is formed from "un-" (meaning not) and "current" (from Latin "currens", meaning running). The word "uncurrent" means not running or not in circulation, often referring to currency or ideas that are outdated or no longer accepted.
Think of 'not' ('un-') and 'running' ('currens') to remember that 'uncurrent' refers to something that is not in circulation or outdated.