Use 'prodigious' when quantifying something of exceptional size, volume, or extent. She amassed a prodigious collection of stamps from around the world.
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Beyond Normal
'Prodigious' implies a level far beyond what is typical or ordinary. The scientist made prodigious advancements in renewable energy technology.
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Neutral Tone
The word carries a neutral tone and doesn't necessarily imply positivity or negativity. Despite his prodigious wealth, he lived a modest life.