Definitions
having incalculable monetary, intellectual, or spiritual worth
Word origin
From in- + valuable (compare priceless).
Used in a sentence
“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.”
“It would be an interesting, and far from an invaluable labour, to trace the history of the murrains, or cattle diseases of former days, and there causes and effects.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Priceless”10 letters
Not quite right?
"Search similar patterns."
I_________