Complex sentence: Humility (adjectival form: humble) is the quality of being modest, reverential, even obsequiously submissive, and never being arrogant, contemptuous, rude or even self-aggrandizing.
Split into simpler sentences: Humility (adjectival form: humble) is the quality of being modest, respectful and even obsequiously submissive. It is the antithesis of being arrogant, contemptuous, rude or even self-aggrandizing.