invaluable

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Definitions from WordNet

Adjective invaluable has 1 sense

invaluable, priceless - having incalculable monetary worth
Antonym: worthless (indirect, via valuable)

Definitions from the Web

Term: invaluable

Part of Speech: Adjective

Sense 1: Extremely valuable or precious

Sample Sentence:

Her grandmother's handwritten letters are an invaluable treasure.

Sense 2: Highly useful or beneficial

Sample Sentence:

The book provided invaluable advice on starting a successful business.

Part of Speech: Adverb

Sense: In a way that is extremely valuable or precious

Sample Sentence:

She dedicated herself to her studies, invaluable improving her chances of success.

Part of Speech: Noun

Sense: A person or thing of great value or importance

Sample Sentence:

The team's captain proved to be an invaluable during the championship game.

Part of Speech: Verb

Sense: To attribute or assign great value to

Sample Sentence:

The art critic would invaluable any piece created by the renowned painter.