In a facile manner; with ease or fluency, or superficially without depth of thought or understanding.
From 'facile' (easy, fluent, superficial) plus -ly adverb suffix. 'Facile' comes from Latin 'facilis' (easy), from 'facere' (to do or make).
Calling something 'facile' is actually an insult—it means superficially easy but lacking real substance, like a facile argument that sounds good until you think about it!
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