How many letters does the top answer for “the quality of being alien or not native” have?

The most common answer is curiousness (11 letters).

Crossword clue: the quality of being alien or not native

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

curiousness 11 letters wn-def

the quality of being alien or not native

foreignness 11 letters wn-def

the quality of being alien or not native

the quality of being alien 60% similar → alienage, alienism

the quality of not being devout 50% similar → irreligion, irreligiousness

the quality of not being doable 50% similar → infeasibility, unfeasibility

the quality of not being exchangeable 50% similar → inconvertibility

the quality of not being safe 50% similar → dangerousness

the quality of not being suitable 50% similar → unfitness

the quality of not being usable 50% similar → impracticability, impracticableness

the quality or state of being native. 50% similar → nativeness