Relevant words for adjective unknown

Below are synonyms, antonyms and words that are in some manner relevant to adjective unknown (as applied to automotive subject domain). You may view concordance (full context) and matched context for essential words.

Relevance	Word	Links
100.00%	unknown	Concordance - Matched context
5.21%	known	Concordance - Matched context
3.73%	rich	Concordance - Matched context
1.03%	available	Concordance - Matched context
0.53%	conventional	Concordance - Matched context