Impossible to measure. See Synonyms at incalculable.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "immeasurable" in a sentence
"But he was also a friend and a mentor who helped my career in immeasurable ways."
"Mr. Friedman presented those benefaction with clever directions, in immeasurable font, to a Awbury Arboretum in Germantown, where we will gather during a Francis Cope House for a annual Birthday Dinner upon Apr 23."
"The engulf was a good place to breed insects, so fish were abundant, as good as which brought birds in immeasurable numbers."