IPA: //ʌnˈtreɪsəbl//
KK: /ʌnˈtreɪsəbl/
Something that cannot be followed or discovered; it cannot be tracked or located.
The hacker used an untraceable method to hide their identity online.
Untraceable → It is formed from "un-" (meaning not) and "trace" (from Latin "tractus", meaning to pull or draw). The suffix "-able" (meaning capable of) indicates that something is not capable of being traced. Thus, the word describes something that cannot be followed or tracked.
Think of something that is 'not' ('un-') able to be 'pulled' or 'drawn' ('tractus') back to its origin — that's why untraceable means it cannot be tracked.