Definition of reasonability in English:

reasonability

noun

  • The quality or capacity of being reasonable; reasonableness.

Origin

Mid 17th century; earliest use found in Thomas Urquhart (1611–1660), author and translator. From reasonable + -ity: see -bility.

Pronunciation

reasonability

/ˌriːz(ə)nəˈbɪlɪti//ˌriːz(ə)nəˈbɪlɪti/