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full-bore

[fool-bawr, -bohr] / ˈfʊlˈbɔr, -ˈboʊr /
ADVERB
flat out
Synonyms
WEAK
all out at full speed at full throttle bluntly directly openly peak performance wide open

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.