francamente
/ˌfɾankaˈmente/ · B1 · adv
frankly
🗣️ franca + -mente = with a frank mind; English frank shares the same root
Spanish adverbs often end in -mente, much like English -ly. Franco means frank or open, from the Franks, who were the free people. So francamente is just frank + -ly: frankly.