Often used metaphorically to suggest a very large or unlimited quantity, not a literal measure. The library has an inexhaustible wealth of resources for research.
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Positive Emphasis
Used to emphasize a positive trait, especially when admiring someone's endless ability. Her inexhaustible kindness makes her loved by everyone.
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Hyperbolic Expression
Sometimes an exaggeration to stress that something is very abundant or numerous. He seems to have an inexhaustible list of excuses for not doing homework.