In an affectional manner; relating to or characterized by affection or emotion.
From 'affectional' + '-ly' (adverb suffix). This double-suffixes 'affection' (emotion) + '-al' (relating to) + '-ly' (manner), creating an adverb about emotional expression.
This is a rare word showing how English stacks meaning—'affection' becomes 'affectional' (adjective) becomes 'affectionally' (adverb). By the time you've added all three suffixes, you're describing someone acting from pure emotion!
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