How many letters does the top answer for “unusualness as a consequence of not being well known” have?

The most common answer is strangeness (11 letters).

Crossword clue: unusualness as a consequence of not being well known

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

strangeness 11 letters wn-def

unusualness as a consequence of not being well known

unfamiliarity 13 letters wn-def

unusualness as a consequence of not being well known

not known or well known 50% similar → unfamiliar