IPA: /nɒnˈrɛlətɪv/
KK: /nɑnˈrɛlətɪv/
Not related or connected to something else; independent of relationships.
The nonrelative data was analyzed separately from the related information.
Nonrelative → It is formed from "non-" (meaning not) and "relative" (from Latin "relativus", meaning related or pertaining to). The word "nonrelative" means not related or not pertaining to something.
Think of 'non-' meaning 'not' and 'relative' meaning 'related' — so nonrelative means something that is not related.