Adverb
With great extent of signification; comprehensively.
Intelligibly; in a manner to be comprehended or understood.
Source: Webster's dictionaryPage 23. The ability to speak the language falls under competencies B and C ranging from "can keep going comprehensibly" to "can express him/herself at length with a natural, effortless, unhesitating flow." Source: Internet
This book is often criticized for its hostile tone and for not articulating his thoughts about autocracy comprehensibly. Source: Internet