Superlative form of hearty; the most robust, enthusiastic, sincere, or abundant in quantity.
Superlative form of 'hearty' (from 'heart' + '-y') with '-est' suffix. Expresses the highest degree of heartiness.
The phrase 'heartiest congratulations' or 'heartiest thanks' sounds old-fashioned now, but it reveals that our ancestors graded their sincerity—suggesting they believed some people's hearts were genuinely fuller or more generous than others.
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