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Idioms and Phrases with to no avail

to no avail

Also, of little or no avail. Of no use or advantage, ineffective, as in All his shouting was to no avail; no one could hear him, or The life jacket was of little or no avail. This idiom uses avail in the sense of “advantage” or “assistance,” a usage dating from the mid-1400s. Also see to little purpose.

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.