the quality or state of being forensic; the characteristic of relating to legal proceedings or evidence.
From 'forensical' with the abstract noun suffix '-ity' (from Latin '-itas'), which converts adjectives into nouns representing qualities or conditions.
Creating abstract nouns from adjectives with '-ity' is one of English's most productive patterns—adding this suffix to 'forensical' turns a descriptor into a concept, like 'stupid' becomes 'stupidity.'
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