The quality or state of being able to be attempted or tried.
From 'attemptable' (capable of being attempted) plus the suffix -ity, which turns adjectives into abstract nouns. The root is 'attempt' from Old French 'attempter' (ad- 'to' + tempter 'to try').
This is a ultra-rare word that linguists love because it shows English's brilliant ability to stack suffixes—we can turn almost any verb into a testable quality by adding -able and then -ity!
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