IPA: /ɪnˈvɜːsɪv/
KK: /ɪnˈvɜrsɪv/
Relating to or characterized by a reversal or inversion of something.
The inversive nature of the experiment led to unexpected results.
Inversive → It is formed from "in-" (meaning not or opposite) and "versus" (from Latin, meaning to turn). The word "inversive" describes something that turns or is turned in the opposite direction or manner.
Think of 'turning' ('versus') in the 'opposite' direction ('in-') — that's what inversive means.