In a fierce, intense, or aggressive manner; with ferocity or violent determination.
From 'fierce' (Old French 'fiers') with the adverb-forming suffix -ly (from Old English 'lice,' meaning 'in the manner of'). Note: the correct modern spelling is 'fiercely,' not 'fiercly.'
This word shows a common misspelling problem—when 'fierce' adds -ly, many people incorrectly drop the 'e' to write 'fiercly.' But the -ly suffix is always added directly, making the correct form 'fiercely.' Understanding suffix rules prevents errors.
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