laboriousness Definition

laborious
adj

1. Said of a task, etc: requiring hard work or much effort, especially when the work involved is tedious and boring.

Thesaurus: arduous, difficult, painstaking, backbreaking, strenuous, herculean, tiresome, ponderous, burdensome; Antonym: easy, effortless, relaxing, simple.
2. Said of someone's written or spoken expression: not natural; not fluent.

Example: waded through pages of laborious prose

Derivative: laboriously
adverb

Derivative: laboriousness
noun

Etymology: 14c: from labour.