plainly
adv. manner B2 Upper Intermediate US //ˈpɫeɪnɫi// UK //plˈeɪnli// plain·ly
adv. in a way that is easy to see, hear, or understand. You use it when something is very clear and honest.
adv. in a clear, easy-to-perceive manner; without ambiguity or decoration.
She spoke plainly so everyone could understand her.
It was plainly obvious from his expression that he was not happy with the news.
The document was written so plainly that even those without legal training could grasp the implications of the new policy.
From Middle English playnly, pleinly, pleyneliche, equivalent to plain + -ly.
Usage
Often used to modify adjectives to emphasize that a quality is unmistakable.