Invaluable

//ɪnˈvælju(ə)bl̩// adj

Definitions

Adjective
  1. 1
    Having great or incalculable value.

    "You are a very strange creature by way of a friend!—always wanting me to play and sing before anybody and everybody! If my vanity had taken a musical turn, you would have been invaluable; but as it is, I would really rather not sit down before those who must be in the habit of hearing the very best performers."

  2. 2
    Not valuable; valueless; worthless. obsolete

    "The money I have received is so invaluable a sum that I have forborne as yet to pay it in, and am heartily sorry that I cannot better advance His Majesty's service."

Adjective
  1. 1
    having incalculable monetary, intellectual, or spiritual worth wordnet

Etymology

From in- + valuable (compare priceless).

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