Definition of lengthiness in US English:

lengthiness

noun

  • See lengthy

    • ‘Despite the lengthiness of these new standards, their impact on many entities will be modest.’
    • ‘I apologize for the lengthiness of this description.’
    • ‘This can be half to one third of the cost of court proceedings, depending on their lengthiness.’
    • ‘Anyway, apologies for the lengthiness of this reply, but the sense of nostalgia is lingering.’
    • ‘I know that most people seem to only skim my posts, so I really do post just for myself, but I'm feeling all-encompassing today, so I apologize for the lengthiness.’

Pronunciation

lengthiness

/ˈleNGTHēnəs//ˈlɛŋθinəs/