Of great value; costly, precious, priceless. (adjective)
Very useful. (adjective)
Beyond calculable or appraisable value; of inestimable worth (adjective)
Examples of word invaluable
PRIME MINISTER and has been very busy demanding what he calls our invaluable suffrages buttonholed me the other day outside the tripe shop and commenced to tell me all the wonderful things that we dogs would get if we only elected a strong Coalition Government -- better biscuits, larger kennels, equal rabbits for all and I don't know what else.
The former were very profuse in their compliments and thanks for what they termed our invaluable assistance; having tendered which they manifested a disposition to resume their former status on board.
Attendees will learn about the latest issues facing the baby boomer market and gain invaluable insights by connecting with a broad spectrum of experts who have unique perspectives on the baby boomer generation.
The entries often contain invaluable information concerning daily events, dates of composition, publication appearances and log entries from Jack and Charmian's various voyages.
Several of Mark Twains books are bound to survive, because they contain invaluable social history.