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Synonyms

full speed

American

noun

the maximum speed.
Nautical. the speed normally maintained on a passage.

adverb

at maximum speed.

to move full speed ahead.

Etymology

Origin of full speed

First recorded in 1350–1400

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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