intelligibly, clear, openly, decidedly, vaguely, precisely, sharply, acutely, distinctly, understandably, aloud, decidedly, all the way, markedly, out loud.
certainly (part of speech: adverb)
intelligibly (part of speech: adverb)
articulately (part of speech: adverb)
simply (part of speech: adverb)
visibly (part of speech: adverb)
transparently (part of speech: adverb)