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"forcefully" is also used as a crossword clue. If that's what you saw, the answer is often vehemently (10 letters).
Definitions
In a strong, firm, or energetic way.
Word origin
From forceful + -ly.
Used in a sentence
“Pack together your best arguments for voting for an athletic field. Word them concisely and forcefully. Give, also, brief, logical answers to any objections that have been raised.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Vigorously”10 letters
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